How dead pixels look on the monitor

Broken pixels on the monitor. Description of the problem and methods of dealing with it.

Nowadays, the phrase “broken pixels” does not cause anything but a headache and bad mood for any user of modern household and computer equipment. But what it really is and how scary it is to be a “happy” owner of technology with these very broken pixels?

To begin with, let’s see how modern TVs and monitors work. Liquid crystal displays form an image using many dots, which are called pixels. When they change their color, the image on the screen also changes, and we see the picture formed from these points. In modern monitors, a matrix is ​​installed, called an active matrix. in it a separate thin-film transistor is responsible for controlling each pixel (that is why such screens are called TFT, from the English Thin Film Transistor). If one of these transistors fails for some reason, we can observe a phenomenon called a dead pixel on the monitor.

Due to a technical malfunction of the transistor, such dots do not change their color when the image on the screen changes and represent a black dot. Although it should be borne in mind that broken pixels can be not only black. on a black background such a point is usually white, and there are also red, blue and green faulty pixels. Such a malfunction in our time can be corrected in a specialized workshop. To do this, it is necessary to replace the corresponding failed transistor, and it will again be able to perform its functions.

But it so happens that the broken pixels on the monitor are formed not due to the failure of the transistor, but due to the so-called stuck dots. Usually, jamming is accompanied by the appearance of a light point on a dark background, which does not change color under any circumstances. Such a defect, in contrast to the “black point”, you can try to fix at home with the help of some physical or software manipulations.

It should also be noted that the world’s leading manufacturers are currently setting special standards that allow a certain number of faulty pixels in the matrix of monitors of various standards. This is due, first of all, to the fact that the percentage of defects among matrices operating on liquid crystals is quite high. You should pay attention to this nuance if you are going to contact a repair shop under warranty. A defective pixel table is included in a standard called “ISO-13406”. It can be easily found on the Internet at the websites of many leading manufacturers of LCD monitors.

Many users often have a question: how difficult is it to see broken pixels with the naked eye? It is hardly possible to answer it unequivocally. This is due to the fact that when buying a monitor, sellers very often show us bright changing images, thereby not allowing us to properly examine the display in various monochromatic backgrounds. For example, it happens that a defective red dot can be seen only against a green background, and even then with a certain shade. Therefore, you should check your purchase very carefully. This can be done using special programs. One of the best such utilities is “Nokia Monitor Test”, which allows you to test the monitor for various defects, readability, moiré and damaged pixels.

Do not forget that the so-called stuck dead pixels (not black dots, but colored ones), you can try to “cure” at home. To do this, you can use either special programs (one of the best such utilities is called “ScreenFix Deluxe”) or try to massage the defective area of ​​the display with a cotton swab. The main thing is not to overdo it during such a “massage”, since the chance of further damaging the display or its anti-reflective coating is quite high.

How to remove dead pixels on the monitor

A “dead pixel” of a laptop looks like a small dot on the screen, which is in the same place all the time and can annoy even the most calm user. You watch a movie, work or play video games, it constantly attracts attention and pisses you off.

The problem is that such a phenomenon can appear even on a new TV or monitor, since according to standards, a certain number of dead pixels (sometimes their number can reach six or even ten) is not considered a defect, which means that the equipment cannot be returned or repaired under warranty. Fortunately, there are ways to cure the device yourself, without the help of specialists.

Dead pixel detection software

There are many online services that allow you to check your screen for this problem for free and then fix it. These include the and sites. In addition, you can use special programs, for example:

  • IsMyLcdOk;
  • Dead Pixel Tester;
  • UDPixel;
  • AIDA64.

All of them are also free, quick to install and take up almost no space on your computer.

Basically, they are a collection of images filled with one color. A broken pixel may appear on any of them. In addition, many of them can be used to test other screen qualities.

So, the problem has been identified, what should I do next? There are also programs not only to determine it, but also to eliminate it. There are many of them, you just need to enter the appropriate search query. For example, let’s take the program “BadCrystal”.

After downloading and installing, launch it and follow the path “Computer”. “launch”. A motley window with rapidly changing colors will appear, which must be transferred to the location of the pixel and wait about half an hour. If the problem persists, increase the speed by clicking on “Speed ​​Com” and leave it on for another 60 minutes. If this also does not solve the problem, increase the speed again and leave for at least half a day.

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Other programs work in much the same way. As a rule, this sequence of actions is sufficient, but there are always exceptions.

How else can you remove dead pixels?

There is also a mechanical way to deal with the defect, the so-called “massage”. It brings different results, for someone it helps to get rid of the dot on the screen forever, for someone it appears again after 1-2 years, but disappears after repeating the procedure for about the same time, for someone this period takes a couple of months or even weeks, but for some this method is useless. It all depends on the reasons for the appearance of broken pixels, but we will talk about this a little later, but for now we will present you with a sequence of actions for performing a “massage”:

  • turn off the monitor, having previously marked the location of the point;
  • take a cotton swab or pencil with a soft eraser at the end;
  • press a cotton tip or eraser to the marked place;
  • do massaging circular movements, gently and without strong pressure;
  • continue the “massage” for about two to three minutes;
  • turn on the monitor and if there is no result, repeat all over again.

We also warn you that this method can only work with single points, and not with their groups, otherwise the pixel spot may grow.

dead, pixels, look, monitor

Why do broken pixels appear?

Each of them consists of three parts. subpixels, which have their own color, blue, red or green. Depending on the command of the transistor, each of them is supplied with such an amount of electricity, which is necessary to give a certain degree of brightness, due to which one or another shade is obtained.

If the transistor malfunctions, a pixel can burn out and either go out, which forms black dots on the screen, or stop holding back the light from the backlight, due to which white dots appear.

If any of the subpixels fails, the dot is colored in a certain color. It is with such a problem that the methods described above will help to cope. The fact is that such subpixels (they are called “stuck”) for one reason or another can “move away” from the source of electricity, which is why they stop functioning, remaining in only one degree of brightness. Program action gives them a huge number of commands per second, which contributes to their activation. The mechanical method can help restore possible disconnections.

How to fix dead pixels on an LCD monitor?

You probably already know that the image on the monitor screen is built from colored dots. pixels. The smaller these dots and the more there are per unit of screen area, the higher the image quality. However, even a good monitor is not immune from one small, but very difficult problem. “broken” pixels. What are “broken” pixels and can you get rid of them??

In liquid crystal monitors, as well as in cathode-ray monitors, each pixel is formed by three sub-pixels of a strictly defined color: black, red and green. To obtain a pixel of the desired color, the position of individual sub-pixels is changed, as well as the direction of the light beam and its power.

A “broken” pixel on the LCD monitor appears if the thin-film transistor that controls it is faulty. In this case, the “broken” pixel looks like a black inactive point that does not respond to changing images. Such a “dead” pixel cannot be corrected at home, because the defective transistor needs to be replaced.

But there is another kind of “broken” pixels. these are light points that are clearly visible on a dark background. Such pixels are obtained if one of the subpixels is “stuck” in a certain position. Then, against the background of the color in which the pixel is “stuck”, it is absolutely invisible. Therefore, it is rather difficult to identify such a problem at first glance.

In order to find “broken” pixels, you need to carry out a certain check. There are special utilities (for example, Nokia Monitor Test) that test the monitor for such pixels. The essence of these utilities is that the user is offered monochromatic pictures of different colors. By switching colors, the user visually assesses whether there are “dead” pixels on the screen.

According to this standard, monitors can be divided into four classes. The first class does not allow dead pixels at all. The second one allows 2 defects of 1 and 2 types, as well as 5 defects of the third type. Displays of the third class can have up to 5 defects of the first type, up to 15. of the second and up to 50. of the third type. Finally, the fourth class of monitors resolves 50, 150 and 500 defects of the first, second and third types, respectively.

“Stuck” pixels, in contrast to “dead” ones, you can try to restore programmatically or by mechanical manipulation.

The essence of the mechanical method lies in the physical impact on the “stuck” pixel, as a result of which it “falls” into place. To do this, gently massage the defective area of ​​the display with a suitable object, best of all with a cotton swab. Do not massage with your fingers or any sharp objects. this can damage the anti-reflective coating of the display.

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Turn off your monitor before starting this procedure. After a few minutes of “massage” you need to turn it on and see the result. You need to repeat the procedure several times.

Another option for “massage treatment” is to use the PDA stylus. In this case, cover the screen with a clean paper towel or rag. The stylus must be placed as accurately as possible on the defective pixel and, without removing it, turn off the monitor. Then you should slightly press on the “broken” pixel and turn on the monitor again. Stop pressing. If it didn’t work the first time, you can repeat this cycle again, changing the pressure and positioning accuracy of the stylus.

Such methods do not give a 100% guarantee, moreover, there is a risk that the pressure will be too strong and the pixels adjacent to the “stuck” will be damaged. Therefore, before taking “extreme measures”, you can try to correct the situation programmatically.

A little trick. If you disconnect the monitor from all cables and wires connecting it to the computer and the network, and wait a few days, then all the capacitors in the monitor should be completely discharged. After that, when turned on, the “stuck” pixel may start to function normally again.

There are various utilities for software elimination of “broken” pixels. One of them is jscreenfix, which is available to users online directly from the developers’ site. After starting, you need to move the program window to the defective screen area and leave the program to run for at least 20 minutes. If after 20 minutes the “broken” pixel has not been removed, then you can try to run the program for 5-10 hours.

The program performs high-speed color change of individual pixels, which allows you to align the stuck pixel.

Thus, some types of “broken” pixels are still amenable to “treatment”. However, so that afterwards you do not have to bite your elbows out of frustration, you should be more careful when choosing a monitor when buying and always require the seller to test for “broken” pixels.

We remove dead pixels by mechanical action

If it was not possible to “wake up” a frozen pixel on the monitor using the program, then you can apply a mechanical effect to it, for example, tap on this place or put a click.

You can take a soft eraser and rub this place, that is, “massage” the problem area. However, do it without fanaticism, do not break the monitor, calculate your strength. Light mechanical impact may well start the TFT operation.

What “Broken Pixels” look like

Dead Pixels are too broad and encompass all sorts of pixel problems, from fading to dying. I will try to describe in detail the specific problems with pixels.

Take a closer look at how your “Dead Pixel” looks on the screen. If it is a small, colored point, for example red or green, other colors are possible, then this means that the pixel is “frozen”, or as they say. frozen, and it is quite possible to stir it up.

But if this is a black or white point, then this indicates that the pixel is covered thoroughly and it will be difficult to reanimate it, and most likely completely impossible. Although, you can try.

In a modern monitor, an active matrix is ​​used, where all the pixels are autonomously controlled by Thin Film Transistors (TFTs). If they break, a black or white inactive speck appears on the screen. a broken pixel.

It does not change color when changing pictures, because the personal transistor does not react to this change. Such “dead” pixels can be restored only by replacing the corresponding transistors, which is done in service centers, workshops; ordinary users cannot fix the defect on their own.

How to remove dead pixels on the monitor

How to remove dead pixels on a computer, phone or TV monitor.

First of all, let’s explain what pixels are and what the word “broken” pixels means. The screens of our modern gadgets are made up of pixels, very small squares. How many pixels on the screen of your computer monitor can be found by right-clicking on it and selecting:

  • Options;
  • Additional screen options;
  • Resolution.

Here is the set resolution, just, and shows how many dots. pixels are currently on your screen. over, you can independently change the number of pixels on the screen by increasing or decreasing the screen resolution. However, if you set the value not recommended, then disproportion and distortion may appear when projecting images.

Pixels also have their components. subpixels, in the amount of three colors, namely blue, red and green.

The main color of a pixel is made up of the location of individual subpixels, and also from the direction of the light beam, which is different in power.

How to remove dead pixels on a computer monitor and mobile devices

There are quite a few online services and standalone programs on the Internet that can reanimate a frozen pixel, in the case when the thin-film transistor just froze a little.

Online check of the monitor for dead pixels can be performed on the website or on the website
Checking the monitor with free and lightweight utilities IsMyLcdOk, Dead Pixel Tester or programs. UDPixel or AIDA64.

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Fixing dead pixels, online, can be done on the JScreenFix-Fix stuck pixels service at We go to the service and press the bright yellow button, at the bottom of the screen, most often on the right.
After that, scroll down the screen and press the blue button. Launch JScreenFix. A window with randomly changing pixel colors will open. Set the window to a dead pixel and leave it for one or two hours. Such treatment in 50% of cases ends with success.

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Checking the uniformity of the backlight of the monitor lamps and checking the dead pixels. Fill your monitor screen with five different colors.

Checking the monitor for dead pixels online

When buying a monitor for a PC or laptop, the quality and condition of the display is by no means the last thing to pay attention to. This statement is equally true when the device is being prepared for sale. One of the most unpleasant defects, which very often can SIMply not be detected at a cursory examination, is the presence of dead pixels.

You can use special programs such as Dead Pixel Tester or PassMark MonitorTest to find damaged areas on the display. But in some situations, for example, when buying a laptop or monitor, installing additional software is not the most convenient solution. However, with the availability of access to the network, web services come to the rescue to test the quality of the screen.

Checking the monitor for dead pixels. Utilities for finding dead pixels (how to check the monitor, test 100% upon purchase!)

Good day.

A monitor is a very important part of any computer and not only the convenience of work, but also the vision depends on the quality of the picture on it. One of the most common problems with monitors is the presence of dead pixels.

A broken pixel is a point on the screen that does not change color when the picture changes. That is, it both burns in white (black, red, etc.) without transmitting color, and burns. If there are many such points and they are in conspicuous places, it becomes impossible to work!

In this article, I want to talk about several programs that allow you to test the monitor for dead pixels (well, to fence you off from buying a low-quality monitor).

I sMyLcdOK (best dead pixel finder utility)

In my humble opinion, this is one of the best utilities for finding dead pixels. After launching the utility, it will fill the screen with different colors (as you press numbers on the keyboard). You just need to look closely at the screen. As a rule, if there are dead pixels on the monitor, you will immediately notice them after 2-3 “fills”. In general, I recommend using!

  • To start the test: just start the program and press the numbers on the keyboard in turn: 1, 2, 3. 9 (and that’s it!);
  • Works in all Windows versions (XP, Vista, 7, 8, 10);
  • The program weighs only 30 KB and does not need installation, which means it can fit on any USB flash drive and run on any Windows computer;
  • Despite the fact that 3-4 fillings are enough for checking, there are much more of them in the program.

D ead Pixel Tester (translated: dead pixel tester)

Another very interesting utility that finds dead pixels quickly and easily. The program also does not need to be installed, just download and run it. Supports all popular versions of Windows (including 10-ku).

To start the test, it is enough to start the color modes, change images, select fill options (in general, everything is done in a small control window, you can also close it if it gets in the way). I like the auto mode more (just press the “A” key). and the program will independently change the colors on the screen with a small interval. Thus, literally in a minute, you will decide whether to buy a monitor.

Monitor test (online monitor check)

In addition to programs that have already become a kind of standard when checking a monitor, there are also online services for finding and detecting dead pixels. They work on a SIMilar principle, with the only difference that you (for verification) will need the Internet to enter this site.

As far as the test itself is concerned, everything is standard here: we change the colors and look at the screen. There are a lot of options for checking, so that with a careful approach, not a single pixel will escape!

By the way, the same site also offers a program for downloading and running directly in Windows.

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