If spots appear on the monitor, this is a consequence of a serious breakdown of your device. Its manifestations may vary:

• round black, dark or gray spots randomly scattered across the screen;
• oblong spots in the form of smudges and blurring;
• red, yellow or other colored spots (on the screen or on its sides);
• light areas in the form of longitudinal or transverse stripes, in which the image is doubled or blurred.

Why do spots appear on the monitor screen?

There are two main causes of stains:

1. Mechanical damage

This may include impacts during careless transportation, strong pressure on the surface of the screen with your hand, careless use of chemicals to clean the screen, ingress of water, etc.

2. Matrix malfunction

Most often, the matrix and the components associated with it fail. For this reason, areas of dead pixels appear. Almost always this problem can only be solved by replacing the matrix.

What do the different colors of the spots mean?

Yellow spots on the monitor

This usually indicates a delamination of the screen. The design of a modern monitor is a combination of thin layers, between which there is a special glue. Violation of the integrity of the layers in this case manifests itself in the form of yellowish spots. It is also possible that foreign liquid, most often water, can get inside.

Red or colored spots on the monitor

Blurred spots of red or purple hue may indicate that the monitor is magnetized, especially after a sudden power surge or thunderstorm. You can try to solve this problem by disconnecting the device from the power supply for half an hour or an hour. In this case, you will be able to hear the moment of demagnetization in the form of a characteristic click inside the monitor.

However, most often the cause of such image defects is a breakdown of the power supply or matrix failure.

Black, dark or gray spot on the monitor screen

If a black spot (or several) appears on the monitor, this almost always indicates a failure of the matrix pixels that cannot be restored. This can be resolved either by replacing the screen or purchasing a new monitor.

Light or white spots on the monitor

It happens that light spots with uneven edges appear on the monitor screen. Sometimes they are clearly visible, but sometimes you need to look closely to notice them. The reason for such glare is a malfunction of some components of the matrix backlight: inverter, lamps or other elements.

How to remove stains on the monitor?

In rare cases, you can try to eliminate light areas that distort the image using monitor settings, but the likelihood that this will help is extremely low. In other cases, repairs are required. At the same time, it often happens that replacing the matrix is ​​completely unprofitable and in this case it is more profitable to buy a new monitor.

Have you ever noticed strange spots on the screen of your smartphone or tablet? The appearance of any spots or streaks on the device screen indicates a malfunction of the display module. Today we will talk about the reasons for their appearance.

Problems with the backlight

Moisture

Quite often, moisture penetration into the device causes stains to appear. The backlight of LCD displays consists of films, an inverter and lamps. The LEDs shine on the side of the plate, and the films scatter the light, forming a uniform backlight on the screen.

If liquid penetrates between the layers of film, they stick together. Where they touch, the light is refracted at the wrong angle and a spot appears on the screen.

As a rule, it has an irregular shape and is characterized by increased brightness. At different angles of inclination, the spot will change its shape or will not be noticeable at all.

If your device has an AMOLED display, then you have no reason to worry. Such screens have a different backlight technology. If a small amount of liquid gets inside the device, a stain will not appear.

If you have problems with your iPhone's backlight, you can replace it. You can purchase a new backlight for the display.

Manufacturing defects

Stain due to a manufacturing defect occurs during display assembly and very often appears to be a stain caused by moisture. The manufacturer may incorrectly select the length of the screws, which is why they rest against the back of the display and lead to the films being compressed together.

Such a spot has an oval shape and does not change at different angles. By the same principle, stains are formed from foreign objects, such as sand.

Occurs in devices in which the manufacturer has not made the correct heat sink. In the place where the device overheats, the films are deformed from constant exposure to high temperature. After the smartphone or tablet cools down, it no longer takes its original shape and a spot forms at the point of overheating. Most often, spots from overheating appear at the ends of the display and have a yellow tint. This spot is darker in the middle and lighter towards the edges.

Overheating spots do not change shape from different viewing angles and may become stronger over time.

LED backlight malfunction

LED backlight problems most often manifested by the appearance of a local black spot or deterioration of the backlight as a whole. The spot forms where the LEDs fail.

Backlight repair– a rather labor-intensive process and takes a lot of time. If the backlight of a smartphone or tablet is broken, it is recommended to replace the display module.

Display problems

After a fall or impact, the image on some part of the screen disappears - this is a sign of a broken display. A spot of this origin most often has an irregular shape, cracks may spread from it, and if you press on it, its size may increase, and its shape may also change.

Using this microcircuit, which is located on the cable, controlled image transfer to the display. The controller breaks due to mechanical impact, that is, from a strong fall or impact. It can also be damaged by liquid.

If the controller is damaged, the image may disappear altogether: the screen becomes completely white or black. But most often, when the controller breaks, multi-colored vertical stripes appear. If you press on the screen, the stripe configuration will change.

It happens that the image may disappear only in one place on the display. Such a spot will have clear boundaries, and the rest of the screen will display a normal picture.

Note! If the backlight disappears on both the screen and the buttons, the problem is most likely with the board.

If a small dot of red, blue or green appears on a plain black or white screen background, it means there are dead pixels.

Dead pixel is a separate element that loses the ability to change its color.

Manufacturers often indicate the quality class of monitors based on the permissible number of dead pixels.

There are 4 classes in total:

Ⅰ - there are practically no dead pixels. If a dead pixel appears, the manufacturer undertakes to repair it under the terms of the warranty or replace the display;
Ⅱ - the presence of 2 defective pixels (white or black) is allowed;
Ⅲ - the presence of 5 white, 15 black and 50 colored dead pixels is allowed;
Ⅳ - 50 white, 150 black and up to 500 colored dead pixels are allowed.

It is worth noting that the quality class of the display directly proportionally affects the price of the spare part. The higher the quality, the more expensive the display is.

Today Problem with the display sticking to the sensor mainly occurs in budget smartphones.

In inexpensive models, there is an air gap between the display and the sensor. When the space between the display and the sensor is reduced, they can stick together and remain in this state for a long time.

The bonding stain can be easily recognized. It is noticeable when the display is turned off and may partially disappear when the backlight is on. It looks like liquid squeezed between glass. When faced with such a problem, users often think that water has entered the device. It is possible to remove such a stain, but to do this you need to re-glue the touch screen.

Module delamination

Delamination in the display module is a type of defect that is classified as a manufacturing defect. A sensor that is poorly glued during the manufacture of the module eventually begins to lag behind the display around the perimeter. As a result, white spots appear. This defect is extremely rare. In this case, the display must be replaced under warranty conditions.

If any stain appears on the screen of your device, contact a specialized service center. It is almost impossible to replace or repair damage to the backlight or display module at home. For repairs, you must use special equipment and have certain skills in repairing equipment.

If you know which specific part needs to be replaced, you can purchase it from our website. To find the right spare part or find a replacement, we recommend reading ours.

Many people have encountered the problem of a yellow spot appearing on the screen of an Android smartphone. It usually looks like this - after a year of using the smartphone, a small yellow spot begins to appear in the center of the screen, which begins to grow over time.

I will say more, the stain can be not only yellow, but also white. Spots of other colors are practically never found, with the exception of burnt-out pixels in LCD matrices.

Why did the yellow spot appear?

The first reason is matrix burnout. This is what owners of inexpensive, budget smartphones face. Unfortunately, in order to save on production and cost, a low-quality display is often installed in a smartphone, which fades over time.

The second reason is overheating of the display. This is especially often the cause of yellow spots on the display for those who like to play games on a smartphone.

The third reason is the glue between the touchscreen and the display. Not all smartphones have this glue, but it can turn yellow over time and thus you will have a yellow spot.

The fourth reason is moisture. Moisture can get under the glass of the smartphone, after which a stain begins to appear. It is usually a white spot with ragged edges.

And the last reason is the transformation of the display due to strong pressure on the smartphone screen.

The most interesting thing is that all smartphones suffer from the problem of stains. There are cases where even iPhones had yellow spots. I have yellow spots appearing on my smartphones - Huawei Honor 4C, Meizu M2 Mini and on Alcatel Scribe HD.

By the way, most Chinese smartphones, such as Xiaomi, Meizu, Huawei this problem appears after one to two years.

What is the most common reason?

In 90% of cases, a large yellow spot appears in the center or white spots along the edges of the display. If this is your case, then the reason is that your smartphone is overheating. I wrote above that spots often appear on those who like to play, but this is partly true. If your smartphone often overheats and you don’t play games, a stain may appear.

The second common reason is a manufacturing defect. Smartphones are extremely complex devices, just like computers. Everything is complicated by the fact that the layout of the elements in the smartphone is extremely cramped, for example, if the battery puts pressure on the screen, you will have characteristic spots. If you notice a swollen battery (for example, your case has started to come apart), change it immediately.

The most important thing is to check your smartphone right at the time of purchase. Be sure to check your smartphone display in a dark room!

I’ll tell you an example from my life: in 2013, I bought myself an HTC 8S phone, which turned out to have a defective screen. In particular, due to the LCD display, dead pixels appeared on it, which are visible only in a dark room and against a black background. From here, draw the conclusion that you need to check your phone in a dark room and on a dark screen and on a light one.

Can I remove a stain from the screen myself?

The most important thing is not to believe that programs like Dead pixel detect fix will help remove the yellow or white spot. A yellow spot is a display defect that appears as a result of overheating and can only be removed in one way - by replacing the screen. The Dead pixel detect fix app will not help you.

You can verify this by reading the reviews of people who tried their luck with this application:

Remember! There are apps like Dead Pixel Detect that are great for testing your screen. The application launches different colors on the screen, thereby you can see whether there is a problem with the display or not.

Also, cooling your smartphone will not help you. By the way, as a result of cooling, your battery, which does not like low temperatures, may also fail.

And the craziest advice you can find on the forums is to reset the settings, update the device and change the battery. But the problem is not in the battery or in the firmware. The problem is in the display. Such advice will not help you!

Is this a warranty case?

It must be remembered that each case is individual. For example, you were using your smartphone carefully and a yellow spot appeared. If you have not passed the warranty period, which is usually one year from the date of purchase, then feel free to take your smartphone to the store where you bought it or to an authorized service center for repairs.

If I were you, I would immediately take the smartphone to an authorized service center. The address of the service center is usually on the warranty card. You can write your city in the comments, I will help you. Why to the service center? The girls in the store will dissuade you, say that this is not a warranty case, and so on.

But there may be another case, you dropped your smartphone and appeared The stain is the result of mechanical impact on the screen. It all depends on the service center, but in most cases, after diagnostics, the device will be returned to you. Remember, traces of mechanical damage are very clearly visible, these are chips, abrasions, cracks.

They can't refuse you for warranty repairs directly in the store. Warranty repairs are refused by the service center, but not by the seller, who at least does not have the proper competence.

What to do if your smartphone is not accepted under warranty, but you want to have it repaired?

Take your smartphone to a service center in your city. I have learned from my own experience that if a yellow spot appears on the screen, it cannot be removed and in any case the entire display module will have to be replaced. If 3-4 years ago anyone who could hold an instrument in their hands could change the display at home, today this is an extremely difficult operation due to the huge amount of glue.

I hope my article helped you. If you have problems finding a service center or display, then write in the comments. I will definitely help you!

Fair, not overpriced and not underestimated. There should be prices on the Service website. Necessarily! without asterisks, clear and detailed, where technically possible - as accurate and concise as possible.

If spare parts are available, up to 85% of complex repairs can be completed in 1-2 days. Modular repairs require much less time. The website shows the approximate duration of any repair.

Warranty and responsibility

A guarantee must be given for any repairs. Everything is described on the website and in the documents. The guarantee is self-confidence and respect for you. A 3-6 month warranty is good and sufficient. It is needed to check quality and hidden defects that cannot be detected immediately. You see honest and realistic terms (not 3 years), you can be sure that they will help you.

Half the success in Apple repair is the quality and reliability of spare parts, so a good service works directly with suppliers, there are always several reliable channels and your own warehouse with proven spare parts for current models, so you don’t have to waste extra time.

Free diagnostics

This is very important and has already become a rule of good manners for the service center. Diagnostics is the most difficult and important part of the repair, but you don't have to pay a penny for it, even if you don't repair the device based on its results.

Service repairs and delivery

A good service values ​​your time, so it offers free delivery. And for the same reason, repairs are carried out only in the workshop of a service center: they can be done correctly and according to technology only in a prepared place.

Convenient schedule

If the Service works for you, and not for itself, then it is always open! absolutely. The schedule should be convenient to fit in before and after work. Good service works on weekends and holidays. We are waiting for you and working on your devices every day: 9:00 - 21:00

The reputation of professionals consists of several points

Company age and experience

Reliable and experienced service has been known for a long time.
If a company has been on the market for many years and has managed to establish itself as an expert, people turn to it, write about it, and recommend it. We know what we are talking about, since 98% of incoming devices in the service center are restored.
Other service centers trust us and refer complex cases to us.

How many masters in areas

If there are always several engineers waiting for you for each type of equipment, you can be sure:
1. there will be no queue (or it will be minimal) - your device will be taken care of right away.
2. you give your Macbook for repair to an expert in the field of Mac repairs. He knows all the secrets of these devices

Technical literacy

If you ask a question, a specialist should answer it as accurately as possible.
So that you can imagine what exactly you need.
They will try to solve the problem. In most cases, from the description you can understand what happened and how to fix the problem.