Restoring dead pixels: causes, troubleshooting, tips. Checking and treating dead pixels Dead pixel channel

There are several reasons why a dead pixel appears on the monitor. This includes leaving the LCD monitor outside the typical rooms for such devices for a long time, for example, in the kitchen, where in addition to constant temperature fluctuations, there is high humidity.

We are no longer talking about the content of fatty vapors in the air, which penetrate into the devices and negatively affect their operation.

Mechanical impact on the monitor is a common occurrence when a finger is pressed on the matrix with excessive force. And many other reasons.

But you need to understand that a dead pixel may be present on a new monitor or laptop matrix, and for many models of such devices this is considered normal.

What are dead pixels?

You can see various types of dead pixels on the monitor, this is:

1. On a black background, white dots are the first type;
2. On a white background, black dots are the second type;
3. Multi-colored pixels, green, red, purple and blue are the third type.

In simple terms, a dead pixel is constantly glowing white or colored or black dots that do not react in any way to changes in the color rendition of the monitor screen.

All of the above types are legalized by the international standard ISO-13406, which also regulates the permissible number of dead pixels in different classes of monitors.

Here, a lot depends on the model of the matrix used, so when buying an LCD monitor or laptop, be sure to turn it on and check for such problems.

This is easy to do by inspecting the matrix visually or using a special utility and taking it with you on a flash drive to the store. We will talk about such programs below.

1. First-class monitors are considered the best and a priori should not have dead pixels on them.
2. The second class allows the presence of no more than 5 problem pixels of type III, no more than two failed pixels of the first and second types.
3. The third class assumes the presence of no more than 50 defective squeaks of the third type, up to 15 of the second type and up to 5 of the first type.
4. The fourth class allows the presence of 500 defective pixels of type III, 150 of the second and, accordingly, 50 of the third type.

Each pixel is based on a thin-film transistor, which controls the entire color rendering process at a specific point on the screen.

If this transistor fails, then we can observe a black dot on the screen and we will no longer be able to change anything at the software level.

You can notice such a pixel only on light screens or where the picture is transmitted in white.

Therefore, as a rule, despite the fact that the black pixel cannot be repaired at home, it is rarely paid attention to, since it is the least noticeable and does not irritate the eyes.

Other types of dead pixels are called “stuck pixels”. They glow in different colors and are very annoying to the PC user, as they are clearly visible on the screen.

As a rule, it is these dead pixels that users of laptops, LCD monitors and other devices that use similar screen technology struggle with.

How to remove dead pixels?

Remove a dead pixel on the monitor, meaning “ stuck pixels", at home, there are three main methods:

1. Software;
2. Mechanical;
3. Software-mechanical.

There are situations when defective pixels disappear on their own during long-term use of the monitor, but this is a very rare phenomenon and you should not count on it. Moreover, if the problem has arisen in the most visible place and interferes with work.

Software method

The method that is the most popular in solving our problem, as it helps in 80% of cases.

The principle of its use is that during the operation of a special program at a fast frequency, the colors of the pixels located next to the broken one change.

As a result, a larger amount of current is supplied to the problem area, as a result, the defective pixel is gradually reanimated.

In each case, the recovery time for a dead pixel may be different, it all depends on the complexity of the situation and the program settings.

In the utility settings you can change the frequency of color changes and the period of its operation. In some cases, it will take from 20 minutes to 5 – 6 hours to solve the problem.

Programs for searching for dead pixels.

If you want to test your monitor for dead pixels, you can use the simple free utility IsMyLcdOK.

There are versions for both 32 and 64 bit systems.

No program installation required.

When you launch the utility, the following window will appear.

By following the instructions, you can quickly check any monitor, including the one you want to buy, for broken squeaks. The program size is about 200 KB.

Multifunctional utility for checking and testing monitors. It has many features, including checking for dead pixels.

It is very easy to use, so there is no point in describing its operation.

Programs for restoring dead pixels.

The most famous and one of the most effective programs is Bad Crystal. It is developed in three versions: Ultimate, Mobile and Primary, and accordingly has different functionality. It is considered one of the best software in this category.

At the moment, version 6.1.9 of BUILD 4061 is current, the official website of the program is z-drex.com. Here you can also read how to use the program.

You can also use previously released working versions, which are easy to download from torrents if you don't mind paying $14.99 for the rarely used Bad Crystal program.

Let's look at how the program works using version 3.0 Ultimate as an example.

After installing and launching the program, a window will appear with the ability to select operating modes.

If you have a trial version, then in this case only the CCM mode will be available. The efficiency of this mode will not exceed 55%.

The more efficient SMF and CFV modes work only in the paid version and ensure pixel recovery in 80% of cases.

The PPM mode is used for preventive work, which should be carried out after restoration procedures, at least once a month.

Having selected the desired mode, click “Launch”.

A window will appear that needs to be placed on the dead pixel.

By default, the program will run for 10 minutes. If the dead pixel does not disappear after this period of time, click Speed ​​Up and change the settings. It is necessary to increase the speed and running time of the program.

It is essentially a free Java application. To use it, you need to go to the official website jscreenfix.com and click on the “Launch JScreenFix” button.

You will be taken to a page like this with a square with moving pixels.

Move this square to the problem area of ​​the screen. By default the program will run for 10 minutes.

If the problem is not resolved, you can increase the running time of the Java application.

The program is free and quite functional. After installing and launching it, the following window will appear.

For example, 5 dead pixels were detected. Set the appropriate settings and click start.

Five flashing dots will appear in the upper left part of the screen, each of which must be placed under a dead pixel.

After 10 minutes, check the result. If necessary, increase the operating time and repeat again.

The UDPixel program also has other useful functionality.

Mechanical method

The mechanical method of restoring dead pixels can be used either separately or together with the programs described above.

The essence of this method is as follows:

1. The location of the dead pixel on the screen is marked in any safe way, the monitor or laptop is turned off;
2. Take a toothpick and wrap cotton wool around it. Or you can use an ear stick or other object;
3. Use this device to gently press the pressed pixel, scrolling it slightly. Don't overdo it with force.

After a while, turn on the device and check the result, repeat these steps several times if necessary. Please be patient, this may take up to 30 minutes.

If everything works, run one of the programs described above and enhance the effect.

Some people use the same method, but with the monitor on and in parallel they also use the program. But this method cannot be called safe, so we do not recommend it.

There is another way, using a stylus from a PDA.

To do this, you will need to very accurately position the stylus opposite the dead pixel, fix it in this position and turn off the monitor.

Do not press the stylus too hard against the screen and, without reducing the pressure, turn on the monitor again. When the screen completely switches to operating mode, remove the stylus, thereby removing the force on the dead pixel.

If the first time does not give an effect, repeat everything again by manipulating the force per pixel and the positioning of the stylus.

In this way we are trying to move the “stuck” pixel from its place and make it work correctly. In 80% of cases this can be done.

Another way.

This method can help in 20% of cases and this is a good chance to correct the situation in our favor.

Disconnect the monitor from all power sources - network, video card, etc. Remove the battery from the laptop, completely disconnecting it from power. Don't forget about the Internet cable.

Leave the device in this state for several days, for example, you went to the country for the weekend.

During this time, all monitor capacitors will be discharged 100%, and the residual current will leave the thin-film transistors.

When you turn on the device, there is a chance that the stuck pixel will work.

This also applies to objects with a large contact area.

Bottom line

As we see, a dead pixel in a monitor in most cases, with the exception of black, can be repaired at home.

The actions do not require much knowledge, the main thing is to learn how to use the necessary software correctly and not to overdo it with effort during the mechanical procedure for fixing the problem.

But do not forget that the presence of dead pixels is also possible in new devices, so carefully check them for such a malfunction when purchasing.

How to get rid of dead pixels? It is necessary to check for defects, including dead pixels, before purchasing. Later, most likely, it will not be possible to replace or return the monitor, citing the presence of non-working pixels.

Sellers argue this based on manufacturer standards regarding dead pixels. And the permissible number of such pixels is unlikely to please you. So check it right away.

Some damaged pixels are easily visible, while others are more difficult to notice. It is better to use the special Nokia Monitor Test utility to check.

Testing for dead pixels

It's very easy to use. Run the test so that all colors are displayed and look carefully at the monitor. If there are any damaged ones, they will be clearly visible.

There are three types of damaged pixels:

1) dark pixels that stand out against a white background. There is no way to fix it;

2) pixels that glow white on a dark background;

3) colored pixels that do not change color (usually red).

If the pixel is not displayed on the screen, that is, it is black on a white background, then you will have to accept it. He is burned out physically, so it will not be possible to “unblock” him. If there are dead pixels of the second and third types on the monitor, then the situation can still be corrected. The problem is that one of the subpixels is “stuck” on one color and now does not respond to attempts to switch it.

Sometimes dead pixels can only appear over time. Such situations also happen. Moreover, when there are only one or two of them, not every service center will want to take on the correction. Especially if the warranty period has expired. That is, you will have to act independently. The problem can be resolved by two methods: software and mechanical.

Treatment of dead pixels on the monitor

In the first case, it is convenient to use the specialized program Bad Crystal. This is a free utility and very easy to use. The principle of its operation is that colors change in a selected area with a high frequency. Thanks to this, the monitor pixels work in enhanced mode.

As a rule, 10 minutes of program operation is enough to “unlock” a pixel. But sometimes it takes up to several hours. Note that the utility will not harm the display, since the working pixels are designed for such intensive work.

In some cases, the software option does not help and you have to mechanically act on the dead pixel. The essence of the method is to lightly massage the area of ​​the dead pixel. The main thing is not to overdo it. This cannot be done with a finger or any hard object.

Take a cotton swab and move it in light circular motions in the area of ​​the dead pixel. Remember that the monitor must be completely turned off. If you did everything correctly, then the chances of fixing problems with the pixel are high. We recommend that after all manipulations with the monitor, you check it again using the Nokia Monitor Test utility.

schel4koff.ru

Dead pixels: what is it, how to check the screen for dead pixels and how to fix the defect?

› Home › Horizon › Gadgets › Dead pixels: what is it, how to check the screen for dead pixels and how to fix the defect?

Nowadays, technology is progressing at incredible speed. Old televisions with cathode ray tubes have been replaced by televisions with liquid crystal screens. The design and dimensions of these TVs are changing. The contrast and resolution of screens are increasing. At first they were only flat, but now concave ones have appeared, apparently the next step will be spherical television rooms. But, unfortunately, any technological development is not without its drawbacks.

And technology based on the use of liquid crystals is also no exception. It’s extremely unpleasant when, while watching, you notice a dot on the screen that at first you take for dirt, you try to erase it, wash it off, but it doesn’t disappear, and then it dawns on you that it’s not dirt at all, but a screen defect. One or more pixels do not work and do not change color when changing the picture. Such dots are called dead pixels.

How can you notice such pixels when choosing a TV with an LCD screen and how many of them are allowed? Let's try to figure this out now.

Pixel performance

The matrix of a liquid crystal screen consists of tiny luminous dots, which are called pixels. The pixel itself consists of subpixels, each of which glows in its own color, one of the three primary colors: red, green or blue.

Due to the fact that each pixel can glow in a different color, add to this the change in the direction of the light beam of different powers... all this together ensures that each individual pixel acquires its own shade. And the glow of all the pixels together contributes to the formation of a complete image on the screen, which we see on the screen of a TV, smartphone, computer monitor or tablet.

Types of Pixel Faults

In modern liquid crystal matrices, each individual pixel is controlled by a thin-film transistor. When such a transistor fails, we see dark dots against a light background, which we can at first mistake for dirt.

But in fact, this is not dirt at all, but an extinct pixel, which is also called a “dead” pixel. Or a white dot is a burning pixel. And if one of the subpixels fails, the dot acquires a permanent color color (red, blue, yellow or green). Such a pixel is called stuck.

Dead pixel rate

Since the production technology of liquid crystal matrices is quite complex, detection of defects is only possible on the assembled screen. Naturally, there is a certain percentage of rejection. But to reduce this percentage, manufacturers have introduced standards that regulate the permissible number of dead pixels.

For example, for matrices from Sony, Sharp, Toshiba and some other brands, 0.3% of dead pixels is acceptable. And such equipment is considered to be in working order, therefore it is not subject to exchange or return. Liquid crystal monitors are divided into classes based on the permissibility of the number of faulty pixels. There are only four of them. First class monitors, in principle, should not have dead pixels.

For the second class, no more than two white, two black and five colored defective pixels are allowed. For third-class screens, no more than five white, fifteen black and fifty color dead pixels are allowed. And for fourth-class monitors, which, fortunately, almost never appear on our market, no more than fifty white, one hundred fifty black and five hundred color defective pixels are allowed.

Checking for dead pixels

In a store, any salesperson will be happy to show you all the capabilities of an LCD screen. Color pictures will replace one another at high speed. The brightness and contrast of the image will be at the highest level. And at the same time, dead pixels are almost impossible to see.

But if you display a single-color background, for example, black, on the monitor screen, you will immediately notice white and colored faulty pixels. Black, white, red and blue damaged pixels are clearly visible against a green color background.

Program for checking dead pixels

Now there are many special programs that are designed to test LCD screens for defective pixels. The most popular, perhaps, is the Nokia Monitor Test, with which you can test the device for a variety of visual parameters, including dead pixels.

In a store, you can ask the seller to test the monitor you want to buy, and he cannot refuse you. At least, I was never refused, except for the case when the TV was delivered to my home. Usually sellers have the necessary program, but just in case, you can take it with you to the store on a flash drive.

The test for dead pixels is very simple, even primitive. The program changes the screen colors at your command, and you look at the screen and look for dead pixels, which become clearly visible.

Repairing dead pixels

It makes sense to restore dead pixels if you noticed them too late to cancel the purchase or exchange the product. And also in the event that this defect really interferes with the use of the device. The fact is that there are not very many chances to get rid of the defect, but there is an opportunity to add problems.

First, you can try to restore the functionality of the pixels using software. For this you can use: Bad Crystal and/or UDPixel.

If it doesn’t help, try “massaging” the faulty pixel by lightly pressing on it with a cotton swab. When massaging, remember that in this way you can not only not fix anything, but also create new faulty pixels.

If all the actions taken do not lead to a correction of the situation, then you will have to come to terms with the defect and try to forget about it. If dead pixels make using the device unacceptable, you will have to buy a new one.

Right now (as I type this text) I have in front of my eyes a Samsung monitor that is already 8 years old. When I bought it there was not a single dead pixel, I checked it in the store. At the moment, several faded pixels have appeared, which become noticeable when working in Photoshop and if you look closely, but in other modes of using the monitor they are completely invisible, so it didn’t even occur to me to waste my time on them :).

Related articles:

Waterproof speakers, which were the best in the test? What parameters and which tablet to choose for a child?

Comments (3)

2016-02-08 21:14:11

I never thought about dead pixels because I never encountered such a problem. But, in the store, when I bought a computer, they naturally checked it in operation first.

2016-02-15 22:11:36

Oh, how interesting, I didn’t know that there are special programs for checking for dead pixels, and even more so that you can try to eliminate them. I know that they tend to grow, that is, next to the broken ones, other pixels burn out faster.

2016-04-01 23:14:41

I work in an organization that practices selling used monitors to company employees at a low price. Now I can check for dead pixels myself - I made a black screen and everything is immediately clear!

CompoGid.ru

How to repair dead pixels at home?

Monitors have become an integral part of our lives. Society observes their presence every day on various devices and gadgets: mobile phone, computer monitor, laptop screen, etc. Despite the abundance of models, all screens differ in two parameters: manufacturing technology and pixel density. The quality of the picture depends on them. But regardless of progress and the latest technologies, a person is not immune from various breakdowns, one of which is a dead monitor pixel.

How can you tell if a pixel is faulty?

A dead pixel is a part of the monitor (point) that does not match the color gamut of the displayed picture. As a rule, this is a dark pixel that is clearly visible against a light background. This type of malfunction does not require repair and, if the equipment is under warranty, it can be replaced.

But the most unpleasant damage is brightly glowing dots of different colors: red, white, green, etc. Often such spots appear suddenly and disappear imperceptibly. Popularly this problem is called “stuck” pixels. Unlike the first option, this problem can be treated in two ways: programmatically or mechanically. To work, you do not need any special devices or laboratory conditions. All steps can be performed at home.

How to find dead pixels on the screen?

First you need to check what condition the monitor is in. Sometimes the indicators can surprise owners, forcing them to abandon the idea of ​​​​restoring dead pixels. You can often find “dead” pixels on the screen. Yes, we can say that such breakdowns can be corrected under warranty, but the law contains a clause that indicates the permissible number of dead pixels on monitors. Therefore, you have to correct the deficiency yourself.

There are a huge number of tools to check this. They can be executed as a separate program with a set of functions, or as an online service that can be used via the Internet.

A good example is the free service Onlinemonitortest. It invites its visitors to select monitor tests from the list:

• checking for dead pixels;
• checking the backlight;
• color rendering;
• text readability test and much more.

This service is a useful resource not only for identifying faulty pixels, but also for adjusting various parameters on the monitor.

Among the useful programs, we note the TFT test. This program has an intuitive interface and does not require installation on your computer. It will be enough to simply download it. A large number of tests included in the program can identify all screen defects and configure it for comfortable operation.

Recovery methods

After you have been able to check and evaluate the condition of the monitor, you can determine the restoration method, which can be of two types: mechanical and software.

Software method

The result is achieved by quickly changing the colors of neighboring pixels. As a result, more energy falls on the “stuck” pixel, and it is restored. This method is able to cure the problem in 80% of cases. This may require more time, experimentation with the duration of the program and the set of colors.

Sometimes, restoring dead pixels in this way brings only temporary results, and after some time, multi-colored dots may appear on the monitor again. If this happens, the procedure should be repeated. Some pixels cannot be permanently cured.

Mechanical method

If treatment with the software method fails, you should use the mechanical one. The process of such restoration looks like a normal wiping of the monitor. You can use a cotton swab and rub it with sufficient force on the part of the monitor where the dead pixel is located. The pressure should be such that streaks appear on the screen. This process may take up to 30 minutes.

The same procedure can be repeated with the monitor turned off. Another way is to lightly click your fingernail on the area where the dead pixel appears.

If the mechanical method does not help, you can combine it with the software one. To do this, you need to run the program on your computer and simultaneously “massage” the dead pixel for about 15 minutes, then leave the program running for a long period of 5–10 hours.

Description of programs that restore pixels

It is worth saying in more detail about the programs that are used in the software method. The most popular programs that repair dead pixels are Bad Crystal, JScreenFixDead and DeadPixelTester.

BadCrystal

This program is used most often. It is widely available on the Internet and can be downloaded or purchased. The free version only works for 30 days and has restrictions on a number of services. You can find a previously released version of BadCrystal 2.6. It is also free and works without limitations, but lasts only one minute. In order to eliminate this nuance, you can use a kind of “crack”: hold down the left mouse button and move the program window, without releasing the button, press it down with some object (book, glass, keyboard). In this situation, the program will run indefinitely.

To start working with the software, you need to decide on which device the dead pixels will be repaired: a monitor, a mobile phone screen, a game console or a plasma panel.

To repair mobile phones and game consoles, a video file is used, which must be pre-generated, then it is played on the equipment in multiple repetition mode.

For a plasma panel, the same video can be recorded to disk or you can use the FullScreen mode and run the program on your computer.

So what should you do? Open the additional program menu by moving the mouse to the top of the window. This displays the four modes that are available: Common Clearing (CCM), System Modified (SMF), Complex Force (CFV), Personal Protection (PPM). If you use the free version, you can only use CCM and PPM. SMF and CFV modes provide a higher percentage of pixel restoration.

The default mode is CCM. We launch it by clicking Launch. Move the program window to the area where the luminous dots appear, let the program run for 5–10 minutes, after which you need to check the result. If no changes occur, repeat the procedure with increased speed, for which you need to use the active SpeedUp button. Leave the program to run for 10–15 minutes.

Therefore, you can repeat attempts, using an increase in speed to the maximum. You can also experiment with the duration of the program. So, in the most difficult cases, repairs can take up to 10 hours.

To avoid recurrence of such problems with pixels, it is recommended to run the automatic prevention mode. In PPM mode, the colors on the monitor change. This procedure should be repeated several times a month to completely remove all problem areas.

JScreenFix

This is a Java application that can be used without installation on your computer. You cannot download it for free; only a paid version is available on the Internet.

Getting started with the program involves finding an area that needs repairs. To do this, select the Locale button in the menu and the program window turns black, move the window in search of luminous points. There is also a FullScreen mode that allows you to check the entire monitor. It's available for free.

Next, you can move on to a paid service - this is the repair of dead pixels. The principle of operation here is the same as in BadCrystal. Also on the site you can download ready-made video files demonstrating the algorithm of the program. This feature is provided free of charge. Such tracks can be played using a player convenient for you on any device, but the effect of this treatment will be less due to the difference in picture resolution.

DeadPixelTester

This is an application that allows you to find and repair dead pixels. The program can be downloaded on the Internet. To start working with the service, select the Solid option in the Pattern menu. Here you need to check the box next to Autocolourcycle and set the time interval to 2500 milliseconds. Then we leave the program running for several hours. This program allows you to remove false pixels on your laptop or computer monitor. It is NOT always possible to cure all stains; they either remain or may reappear some time after they disappear.

Repairing this problem, like dead pixels, can be done at home, without resorting to complex technologies and specific methods. Which of the proposed methods to choose is your decision.

InstComputer.ru

Dead pixels on laptop

Dead pixels on a laptop are non-working, glowing dots or parts thereof. A dead pixel is black and can be seen in light or white colors. It cannot be cured. A dot that glows red, purple, yellow, blue or green is a dead pixel or sub-pixel on the monitor.

How are dead pixels removed?

Many people ask the question: how to remove a dead pixel? You can remove dead pixels at home in two ways:

• program,
• mechanical.

Software recovery

The software method involves quickly changing the colors of neighboring pixels. Thus, the subpixels receive a large amount of energy and come back to life. Using this process, you can restore 55%-80% of broken points. It may take varying amounts of time to restore points. During setup, you will need to change the speed of color replacement and the working time of the program.

In hot weather, the corrected pixel may stop working again. It is necessary to repeat the entire recovery process again. There are cases when such a dead pixel on a laptop cannot be cured.

Updating dead pixels with the program

The Bad Crystal program can not only be purchased, but also downloaded. You can use the program in test mode for free for 30 days, but some functions will not work. The previously developed version of Bad Crystal 2.6 has no restrictions in operation, but the open program runs for 1 minute. To increase the operating time, you need to move the window with the left mouse button and do not release it. The button can be pressed down with any object and left in this position for the required amount of time. Before starting the program, you must select a device: computer screen, plasma panel, console or telephone.

How to remove dead pixels mechanically

To restore dead pixels mechanically, we will need a cotton swab and a lot of patience. It is necessary to massage with a cotton swab on the monitor where the dead pixel is located. You don’t need to apply too much pressure with the stick until streaks appear while doing the massage. This procedure must be performed for 10-30 minutes. After restoring the pixels mechanically, you can also run the Bad Crystal program.

If this method does not give any result, then you can combine it with the software one. You need to start the program and at the same moment massage with a cotton swab for about 15 minutes, and then leave the program in operating mode for another 10 hours. If this method does not get rid of dead pixels, then you should replace the matrix for the n116bge laptop. In this article, we talked about subpixels and dead pixels. We also talked about how to remove dead pixels. Let the article bring you only benefit.

1comp.spb.ru

Checking and treating dead pixels. Part two

Here is the promised continuation of the material on the treatment of dead pixels on LCD monitors.

What are “dead pixels”, what are they, how are they diagnosed and how are they treated, and why, in fact, you can’t just exchange a defective monitor under warranty - we talked about all this in the first part of our article. Those who have just joined us can get acquainted with it here.

Well, for now we will continue to get acquainted with other treatment methods.

Having sifted through mountains of information on the World Wide Web, we came to the conclusion that all methods available at home for treating dead pixels on LCD monitors can ultimately be divided into two main methods: software - the method of aligning pixels using high-speed color changes in the defective area, and mechanical - a method of direct physical impact on a stuck pixel. But there are several ways to implement them, some of which you met in our first article. Now it's time to explore other options.

Software methods for treating dead pixels

You were introduced to the ScreenFix Deluxe utility in our first article. We can only add that the 20 free minutes of work declared by the manufacturer is often not enough for complete treatment, and you need to buy a license. But there is another option. On the page http://www.jscreenfix.com/video.php the developer ScreenFix Deluxe has posted ready-made video files for free downloading with a recording of the therapeutic effect of the program. Files are available in various formats and for various monitor resolutions. There are even files for mobile phones and PDAs. Also on this page there are disk images that can be burned onto a blank disc and played on a home DVD player - you can try to cure, for example, an LCD TV.

Another program of this kind, UDPixel, is completely free. You can download it from our website. The utility is very easy to use. On the left side of its working window there are buttons that allow you to fill the monitor screen with some uniform color - this will help to accurately determine the location of defective pixels. On the right side are the main settings. You can select the number of dead pixels that you want to treat simultaneously, the size of the treatment areas - 1x1 or 5x5 pixels, and the flicker frequency - the developers recommend setting it equal to the response time of your monitor. If you don’t know him or are not sure of the accuracy of the information, leave everything as is. After launch, a small flickering area appears on the screen, which you need to drag with the mouse directly onto the dead pixel. When you right-click on it, you can select the colors with which it will flicker.

The program also has a small drawback - the developers say that to get the desired effect, the utility will have to be run for several hours. But there is a big plus, in addition to being free - UDPixel can work in the background and does not interfere with other programs at all. Those. During treatment you will be able to fully use your computer. (If you accidentally minimize the main program window, UDPixel will completely disappear from the panel - the healing areas will remain - in this case, you can close the program only through the Task Manager, killing the UDPixel process)

Another similar program is Bad Crystal. Its brief description and download link are also available on our website.

Mechanical methods for treating dead pixels

To the options for massaging defective areas described in the first part of the article, you can add the use of pressure from the back of a regular pencil with an eraser at the end.

Sometimes a fingertip massage helps. You need to place your finger on the dead pixel, press lightly and move it 3-5 mm. You can move it both horizontally and vertically, or try drilling movements. The degree of pressure can be controlled by whitish streaks radiating from the massaged area.

Several ways to treat dead pixels from foreign users

1.Cover the screen with a clean rag or paper napkin folded in half to prevent scratching the monitor. Take some object with a thin but not sharp end - a stylus from a PDA is ideal. Place the tip of the stylus exactly on the dead pixel - try to place it as accurately as possible, without affecting healthy areas. Without removing your hand, turn off the monitor. Press lightly with the stylus and, without interrupting the pressure, turn on the monitor again. Stop pressing, the dead pixel should disappear. If necessary, the operation can be repeated several times, changing the pressing force and the accuracy of the stylus positioning.

2.Turn on the monitor and put on some dark image to see the dead pixel more accurately. Take a pen with a rounded end or something similar. Place the rounded tip exactly on the defective area and press lightly so that a small whitish area forms around the pressure point. Let go. Can be repeated 5-10 times, gradually increasing the pressure.

3. Extreme method - high temperature method. Useful in cases where there are quite a lot of defective areas. Works best with laptops, but can also be used on standalone monitors.

ATTENTION. This method is dangerous, as it can lead to overheating of the computer and its complete failure, or burnout of its individual components.

You use it at your own risk. The editors do not bear any responsibility for possible consequences. Be sure to back up all important data before using it.

Turn on your computer. If it is a laptop, provide it with power from the mains. Go to Control Panel and disable all sleep and standby modes - the monitor should be on all the time. Close the laptop lid, but do not let it close all the way - place something small and soft between it and the case. Place your laptop or monitor in a partially closed desk drawer or some other less well-ventilated area and leave it there for several hours or even days, checking the results occasionally. The high temperature will allow the liquid in the crystals to flow more easily and get into areas that were not previously filled.

There is one more trick. You need to disconnect absolutely all cables connecting it to the computer and the network from the monitor and wait a couple of days or, with the cables disconnected, press the power button several times - all capacitors in the monitor should be completely discharged. After this, perhaps the stuck pixel will begin to function normally again. Try it, sometimes it helps.

And finally, another extreme way to treat dead pixels.

The method is quite dangerous. Everything is at your own peril and risk!!! If you are not sure, use the methods above.

We determine the exact location of the dead pixel. We add a contrasting background underneath it so that the defect is clearly visible - for example, black if the pixel is white or colored, or white if the defect is dark. Take a disc box/SD flash drive or something similar (it must be plastic, not very soft, but not hard either, as you can scratch the screen). Without turning off the monitor, we begin to massage the broken pixel with the prepared object. The movements should resemble the movements of rolling out dough - you seem to push the “dough” from neighboring pixels (within a radius of 2-3 pixels) to the central one, which is not working, then back from the idle one to the neighboring ones (no need to do circular movements, you can scratch the screen ). You don’t need to press too hard, but you don’t need to press too lightly either. You need to press so that the marks in the massage area are visible.

If after 30 seconds of hard work the broken pixel has not been restored, you can stop - there will be no point, you shouldn’t keep pushing for several hours. With all this, you need to be extremely careful not to damage neighboring pixels. If you have no idea about the structure of the crystal lattice of an LCD matrix, then it is better not to try to use this method.

We can finish here. We hope that one of the methods we described will help you restore dead pixels on your LCD monitor.

Happy treatment!

I mentioned some dead pixels on the display (and also bad sectors on the hard drive, but more on that later). Now the time has come to reveal to you the terrible secret of what a dead pixel is. More precisely, from this article you will learn:

1. What are the types of dead pixels?
2. How to check your monitor for dead pixels?
3. How to remove dead pixels? The so-called "treatment"

Well, I think we can start analyzing the topic.

A pixel is a point on your monitor or display that can take on any color. If your monitor resolution is, for example, 1024x768, then this means that your monitor has a whole field of dots - 1024 dots wide and 768 dots high. There are 786432 points in total (according to the formula for the area of ​​a rectangle). Thus, on your monitor there are almost a million (sometimes much more, for example 4K) multi-colored dots from which the image is formed.

A dead pixel is a defective pixel that does not work as expected or does not work at all. Instead of the expected color, the dot may be black, white, or a solid color (red, green, or blue).

Naturally, dead pixels interfere with working at the computer, irritate, infuriate, distract, and so on. Therefore, it is better to immediately check the device you are purchasing for the presence (or better yet, absence) of dead pixels.

If you notice such incorrect points too late, then it is not a fact that you will be able to return the device under warranty. Because some classes of displays tolerate a small number of defective pixels.

What are the types and types of dead pixels?

Depending on the color of the broken pixel, you can understand what type it belongs to and whether it is possible to cure it.

Hot, dead and stuck pixels (from left to right)

• 1st type – white dot. Also called " hot pixel».
• Type 2 – black dot. Other titles " dead pixel" And " dead pixel».
• 3rd type – colored dot. These are formed when one of its subpixels fails. It is also called " stuck pixel».

Theoretically, you can only cure a stuck pixel on your own at home. More on this later.

Checking for dead pixels

How to check the screen for dead pixels? This is the first question that arose when you learned about their existence. In fact, the entire procedure for checking a monitor comes down to a thorough and careful inspection of the screen.

Checking for dead pixels (instructions):

1. Give the screen a good dusting to avoid any visual clutter.
2. Set the screen to the optimal resolution (native). If suddenly your situation was different.
3. Inspect the screen, including a solid color background (black, white, red, blue, green, yellow) in turn:
   1. You can use simple pictures that you have prepared in advance.
   2. You can use special utilities, for example: Nokia Monitor Test, Dead Pixel Tester (http://dps.uk.com/software/dpt), Monitor Test (http://tft.vanity.dk) and others.

Colors to check for dead pixels

All. You will notice deviations with the naked eye if there are any. And if they are not there, then feel free to take a monitor. By the way, it’s not a fact that dead pixels won’t appear later. The main thing is to notice them in the first 14 days after purchase, then you can return the product under the consumer rights law.

A completely adequate question is “Is it possible to cure dead pixels?” And the answer is positive. Or more positive than negative. It will be more correct this way. Because not everyone is able to remove unwanted dots on the monitor. And it’s not a fact that this is forever.

In general, there are 3 methods for treating dead pixels:

1. Program
2. Mechanical
3. Software-mechanical

Software method

To treat dead pixels, you need to use special utilities. Some of them are paid, some are free. The idea is to launch the utility, which is a small window with dots constantly flickering in different colors. And use this window to influence the place with bad points, simply dragging it over them and leaving it there for 20 minutes. Examples of such utilities: JScreenFix, Bad Crystal and others.

JScreenFix in action

Mechanical method

The so-called “mechanical pixel massage” consists of massaging the desired area with something not sharp, for example, an ear stick, but preferably with a stylus for a PDA, if you have one. Do not press hard, but hard enough to create streaks on the monitor matrix. This should be done for 10-20 minutes with the screen on. If you managed to revive the point in this way, then I sincerely congratulate you.

Software-mechanical method of treatment

If treating dead pixels does not help after using the first 2 methods, then you can try using them simultaneously. But it’s better to try starting with the first method, since it is the most loyal.

Do not forget that you treat dead pixels at your own peril and risk, because there is a possibility that you will make things even worse. Therefore, if the defective points are not very noticeable and do not interfere with your work, then it is better to leave everything as is. In addition, sometimes it happens that they disappear on their own. Oh miracle!

Conclusion:

Now you know how to detect dead pixels and how to fix them. Once again I want to say about the treatment of dead pixels: if they don’t interfere too much, then you don’t need to do anything, otherwise their number may increase and then it won’t be fun at all.

Well, that’s all, we figured out what a dead pixel is. Good luck with your shopping. And check your monitors especially carefully.

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Summer has begun, heat and new jokes. I have a one-room apartment and, guess what, I decided to put a second computer in the kitchen with a 19-inch TFT monitor! What does summer and dead pixels have to do with it? And here's what it has to do with it. 36 degrees outside, the stove, oven and high humidity did their dirty work - a couple of dead pixels appeared on the monitor.

Dead pixels are constantly glowing or, on the contrary, dots or parts of a dot (subpixels) on the monitor that are not working. If a pixel does not work at all, then it always looks black and is noticeable only in white and light colors. This is the most harmless type of dead pixels, but it is practically impossible to treat.

The most common dead subpixels are when a bright red, blue, green, yellow, turquoise or purple dot is constantly glowing. They are also called “stuck pixels”. If such a pixel appears in a visible place, it is very annoying, especially the red one :) If all three subpixels are faulty at once, then a white dot will glow on the screen.

By the way, defective pixels can either appear or disappear on their own. On my main monitor from the moment I purchased it, there were three multi-colored dots in the middle of the screen. I either didn’t notice them when I bought them, or they already appeared at home, I don’t know. But I didn’t bother about this, because... they were absolutely invisible to the eye unless you looked closely. In 4 years of working with this monitor, I have never noticed them, although they were in the middle of the screen.

I think this is due to the fact that my monitor is on an MVA matrix, and not on the common TN. Probably, the specificity of the matrix is ​​such that small defects are not noticeable. So, I recently decided to check whether these pixels can be removed in a new way. I started checking - but they weren’t there! They all went somewhere in formation :)

Programs for restoring dead pixels

There is no need to talk about high-tech methods used only in laboratories. Is it possible in principle to get rid of multi-colored dots at home? Yes it is possible! And I was convinced of this myself. There are two ways to eliminate dead pixels - software and mechanical.

Restoration occurs due to the rapid change of colors of adjacent pixels. Thanks to this process, a large amount of energy is supplied to the subpixels and they come to life. This technology promises to restore from 55% to 90% of “stuck pixels”. True, each case may require a different amount of time; you will have to experiment if you can’t quickly remove damaged pixels. Experiments mean changing the speed of color changes and the running time of the program.

The restored pixel may become stuck again after some time, especially in hot weather. Then the treatment process will need to be repeated. In some cases, such a pixel cannot be completely cured.

UndeadPixel will suit most

Go to the official website and download the program installer. I recommend the installation version, not the portable version.

In the main window of the program, you are prompted to first find dead pixels by filling the screen with solid colors: red, lime, blue, white, black and yellow. Different dead pixels will be visible on different backgrounds. If you already know where your pixels are, then go straight to recovery.

UDPixel works like this: a square appears in which the colors quickly change, i.e. there is a pixel restoration algorithm working there, and we need to move this square to the problem area of ​​the screen. In the “Undead pixel” section you need to set the following parameters:

• Flash windows - the number of squares, i.e. how many problem areas are you going to treat at the same time?
• Flash size - the size of one square in 1x1 or 5x5 pixels. Since it is very difficult to set a 1x1 square to exactly 1 pixel, a 5x5 area is suitable for restoring even one pixel
• Flash interval — pixel update speed according to the algorithm. The shorter the time, the faster the speed. Maximum speed at 3 ms.

Click Start and move the flickering square(s) to the defective areas, watch the video below. When the pixel starts blinking, then this is already a bid for victory, just leave it for a longer time. If everything remains unchanged, then select the maximum speed and wait until the pixel disappears. In worst cases it can take 10 hours, there is no point in waiting any longer.

The peculiarity of UDPixel is that during pixel restoration you can continue to work if the squares are not large and do not interfere.

JScreenFix for browser

This is not a program, but just a website, a free service on the Internet. Thanks to this, JScreenFix can be run on any device with the Internet: computer, laptop, tablet, MacBook or LCD panel.

Scroll down the page and click the “Launch JScreenFix” button. The JScreenFix script restores dead pixels in the same way as UDPixel, only without the ability to change parameters, and you won’t be able to work on the computer at this time.

You need to move the iridescent square to the problem pixels, and if they are outside the browser window, then switch to full screen mode using the green button. Look at the video how Undead Pixel and JScreenFix work:

The manufacturers of these programs recommend doing preventative maintenance on your monitor, occasionally starting the “recovery process.” I don’t know how justified it is to spend your attention on this, but for plasma panels it can be really useful.

Bad Crystal - all-in-one combine

On the website you can both download the program and buy it. The free version runs for 30 days in limited functionality mode, which does not support more advanced technologies. You can find a version without restrictions on the Internet 😉

The program begins by selecting a device: computer screen, mobile phone, game console or plasma panel.

For mobile phones and game consoles, a video file is generated at the selected resolution. You will need to play it in repeat mode on your smartphone. For your TV, you can burn a DVD or flash drive with the finished video, or run it in “Full Screen” mode.

If you have a regular monitor or laptop, select “Computer Monitor”. To display an additional menu, move the mouse to the top of the window. There are four modes available here: Common Clearing (CCM), System Modified (SMF), Complex Force (CFV), Personal Protection (PPM). The free version only works with CCM and PPM. The remaining two modes should provide a higher percentage of restored pixels. By default, CCM is selected.

Click “Launch” and move the window to the area of ​​dead pixels. We wait 5-10 minutes and check. If the point remains, then increase the speed using the “Speed ​​Up” button, which appears if you move the mouse to it, and wait another 10-15 minutes.

The developers claim that their algorithms allow not only to treat pixels, but also to eliminate spots on the screen and. But this is the case when these are simply accumulations of pixels that are not working correctly. Watch the video:

Next, to prevent the pixels from getting “stuck” again, it is recommended to enable the automatic prevention mode – PPM. In this mode, the colors on the monitor change over time. The process starts 2-3 times a month when no one is working at the computer.

Mechanical method

I have not tried this method, but I have seen many reviews in its favor. If the programs couldn’t cope, then it’s time to massage the monitor :) Exactly. Take an ear stick and begin to massage the area of ​​the broken pixel. You just don’t press very hard, but so that streaks appear, and massage the affected area. The case requires perseverance, as it may take from 10 to 30 minutes of work.

If it works - hooray! I congratulate you, you can “polish” this matter with Bad Crystal. And if the pixel stubbornly refuses to recover, then you can try running the program and at the same time massaging the area for 15 minutes, then leave the program running for 10 hours.

I hope that the article was very useful to you. Your friends will be very grateful if you share this information using the social media buttons below the article.

The user consumes information through a monitor or laptop screen, so the presence of defects on it is unacceptable. The monitor itself is a fairly simple device, but at the same time quite fragile. The main trouble that a user may encounter when purchasing a monitor is the presence of dead pixels, that is, screen elements that are not capable of correctly transmitting colors. To avoid such a problem, you need to carefully check it when purchasing a monitor, and in this article we will look at how to do this.

Table of contents:

What is a pixel, what are dead pixels?

First we need to tell you a little theory. A pixel is the smallest part of the display that displays a picture. Depending on the display resolution and its diagonal, a pixel may be larger or smaller in terms of physical size.

Please note: Modern monitors can use several million pixels.

If one of the pixels or a group of pixels does not work, the image on this part of the screen will not correspond to the one transmitted to the monitor from the system unit. There are several types of dead pixels:

• Non-working. These pixels do not convey the image, and they are always black;
• Stuck pixels. Most often these are pixels that are stuck in blue, red or green. They are not capable of working with RGB colors;
• Constantly glowing pixels. These are pixels that are constantly lit in white.

Please note: Sometimes not just one pixel fails, but a group of pixels in a horizontal or vertical stripe, or “squares” of pixels, for example, 5 by 5 or 10 by 10 elements, are damaged.

Why is it important to check your monitor for dead pixels when purchasing?

When purchasing a new monitor or laptop, be sure to immediately check for dead pixels in the store. This is due to the fact that if you discover such a defect after purchase, it is far from certain that you can return the monitor under warranty. The fact is that there is a standard ISO13406-2, which determines the permissible number of defective pixels for monitors of various classes.

This standard provides for the release to the market of monitors in 4 quality classes. The best class is first, the worst is fourth.

Please note: Almost all mass-produced monitors are produced according to the second quality class, respectively, according to the standardISO13406-2 implies the presence of dead pixels.

According to standard ISO13406-2, the following number of non-functioning or malfunctioning pixels in monitors of various classes per one million pixels in the panel is allowed:

• 1st quality class. There should be no defective pixels at all;
• Quality class 2. No more than 2 permanently lit white pixels, 2 permanently off black pixels, 5 pixels with other defects are allowed;
• Quality class 3. No more than 5 permanently lit white pixels, 15 permanently non-lit black pixels, 50 pixels with other defects are allowed;
• Quality class 4. No more than 50 permanently lit white pixels, 150 permanently non-lit black pixels, and 500 pixels with other defects are allowed.

It is worth noting that the acceptable value of defective pixels does not mean that they are necessarily present on a monitor of one class or another. The quality class of a monitor according to accepted standards is determined by the device manufacturer itself. Depending on what class it determines, additional warranty obligations are imposed on it.

How to check your monitor for dead pixels

When purchasing equipment in a store, you always have the opportunity to check it right on the spot, and in a situation with a monitor, this definitely needs to be done. There are special applications that allow you to check your monitor for defective pixels. Programs are available, both standalone and presented on various sites.

The principle of operation of all programs for checking the screen for dead pixels is identical. The entire working area of ​​the display is filled with a single color, a group of colors or a gradient, which allows you to see dead pixels if they are present on the monitor. Let's look at the main programs and sites that can be used for such a check.

Programs for checking your monitor for dead pixels

If you buy a monitor in a store, it is better to first record one of the programs described above on a flash drive in order to perform an on-site test.

Dead Pixel Tester

One of the most famous free applications for checking your monitor for dead pixels. To use Dead Pixel Tester you need to:

Among the program’s capabilities, it should be noted that the function of changing modes can be set to a timer; to do this, you need to check the “Auto Color Cycle” box and set the time in milliseconds. After this, the modes will change automatically.

Another feature of the program is the creation of a limited area on the screen with constantly changing colors. To create it, you need to click on the “Exerciser” button, after which the corresponding square area will be created. It can be dragged with the left mouse button. If there is any doubt that there is a dead pixel in some part of the monitor, this tool helps to verify this.

IsMyLcdOk

IsMyLcdOk is another application that does a good job of diagnosing dead monitor pixels. The program also does not require installation and can be easily downloaded for free on the Internet. The application weighs very little and works extremely simply.

When you first launch the IsMyLcdOk program, information will appear that describes what you should click to perform the test. To return to the instructions after starting the diagnostics, you will need to press F1.

To test, select the mode using the buttonsF2-F5. Among the monitor test modes available in the IsMyLcdOk program:

• Check BitBlt MB/sec;
• Painted rectangles;
• Painted stripes;
• Durability testing;
• Vertical lines;
• Horizontal lines.

In addition to special modes, it is also possible to simply switch colors or gradients.

Sites for checking your monitor for dead pixels

If you don’t want to download a program to your computer to check your monitor, you can use sites with similar functionality. Let's consider a couple of options.

Please note: Sites for checking the screen for dead pixels are convenient to use, for example, when testing tablets or smartphones.

Monteon

A simple and functional service for testing your monitor for dead pixels.

To use the service you must:

To finish testing the monitor with the service, click on the house icon in the lower left corner of the screen.

Please note: ServiceMonteon, unlike the programs discussed above, has a mode in which looped video is shown. In this mode, you can check the pixel color refresh rate.

Vanity Monitor Test

Quite an old, but well-proven service that allows you to test your monitor. To operate this service, you will need to have Adobe Flash Player on your computer, which can be considered a disadvantage. To start testing, you need to click “HTML Windows”.

The choice of operating mode in the Vanity Monitor Test program is carried out through the drop-down menu at the top.

Treatment of dead monitor pixels

Dead pixels on the screen are not always a death sentence. In some cases, you can get rid of them and make them function normally again. There are several ways to do this:

If none of the above methods helped restore the dead pixel, you will have to put up with it or replace the monitor.