Dead pixel what to do. How to get rid of dead pixels on the monitor? What are dead pixels?

The appearance of a dead pixel (or several) on the screen is not a rare occurrence. Sometimes it's even a factory defect. But very often, if the display is not checked before purchasing, the user may notice this defect after some time. After all, a dead pixel can only glow in a certain color.

A LITTLE THEORY

Most smartphone displays are made up of pixels. Each individual pixel consists of three sub-pixels, namely red, green and blue. The combination of these colors in various variations results in a wide light spectrum.

If you find a point of black, white or any other color that does not fit into the overall color picture, then your smartphone display has a dead pixel.

Dead pixels can be divided into 2 classes:

• dead pixels;
• dead pixel (stuck).

Dead pixels- this is when the pixel does not “light” at all. In fact, he's burned out. It is always black on any background. Such pixels cannot be restored. Only replacing the screen will help.

Dead pixel- this is one or more “stuck” points of the screen matrix, displaying two colors out of three (or one out of three), which leads to incorrect display of the final color of a given pixel. It is these pixels that can be “cured.” This is what this article will discuss. We will not consider options with mechanical impact on the screen, heating, cooling, disassembly and other options that should be dealt with by specialists at the service center. We will talk about programs that, in a certain way, repeatedly use the pixels of the screen over a certain period of time, which in turn can return the “stuck” pixels to their normal functioning, in a word, “revive”.

HOW TO DETERMINE THE PRESENCE OF A BAD PIXEL

Due to the fact that the resolution of modern smartphone displays is already quite high (FULL HD), and in more expensive devices it is even higher (FULL HD+, 2K), detecting a dead pixel “without the naked eye” is quite problematic.

There are several ways:

• smartphone engineering menu;
• third party applications.

Engineering menu.

We will not dwell on the description of this method. We have already published, in which we described in detail the opportunity to test not only the quality of the display before purchasing, but the entire smartphone as a whole, as well as our recommendations. The advantage of this method is obvious. Absolutely any smartphone has an Engineering menu; there is no need to install any software, all components of the device can be checked using standard tools.

Screen test apps.

IN Play Market There are many programs of this kind. Just type in the search: “test display” or “screen test”. A large list of programs will be displayed that can help you identify a dead pixel (or pixels). Why are there so many programs of this kind? Yes, everything is very simple. To identify such a defect in the display, the usual filling of the screen with different colors is used. This is how you can notice a pixel that has a glow that is different from the color with which the screen is filled.

PROGRAMS FOR RESTORING DEAD PIXELS

Let's look at some of the programs.

JScreenFix

This program has a very simple design with minimal settings. After launch, a window appears with short instructions.

By clicking on the “Fix Stuck Pixels” button, the procedure for restoring dead pixels will start.

Although the instructions indicate that the “treatment” mode needs to be run for about 10 minutes, to achieve any result, it actually takes longer, especially if there are a lot of dead pixels. It is better to start this procedure at night, remembering to connect your smartphone to the charger, because... During the entire process, the screen will remain on and the phone may simply die. This clarification applies to all programs that will be presented below.

Pixel Fixer

Another similar program without any settings. I launched it, clicked on the green circle - the process began.

Treatment of dead pixels

This program is equipped with more diverse functionality and settings.

In addition to the procedure for repairing dead pixels, this program has a built-in display test, which is necessary to identify screen defects. By clicking on the “CHECK PIXELS” button, we proceed to the testing procedure.

It is possible to select a testing mode. Automatic and manual. In automatic mode, the colors will replace each other in a circle, covering the entire spectrum of colors. No action (except for carefully viewing the screen) is required from the user. The process will continue until you exit it. If there is a need to check for dead pixels on specific (primary) colors, then a manual test will help. The primary colors will be displayed in turn, moving to the next one when you tap anywhere on the screen.

If during the test you discover defects in the smartphone screen and there is an opportunity to fix it ("stuck" pixels are detected, not dead ones), then you can immediately proceed to the process of restoring dead pixels by selecting the "PIXEL TREATMENT" item.

By selecting “START”, the “treatment” procedure will begin. It will continue until you stop it yourself. If you select the “START ON TIME” item, you can manually specify the period for the recovery.

The “treatment” process is as follows.

A large number of computer users have to deal with monitor malfunctions. This article will focus on dead pixels. Having heard such a “diagnosis”, many believe that this is the end of the screen. In reality, things are not as bad as they seem.

You bought a new model of LCD monitor, leaving an old kinescope in a landfill. It's time to test the purchase. To ensure that the information is accurate, do not forget to adhere to a number of rules, but that is not what this article is about.

Having launched a movie or game on the screen, you notice something is wrong - a black dot has appeared (maybe of a different color). The defect greatly interferes with testing the monitor.

This malfunction is a consequence of the production of the screen and is called a dead pixel. Let's look at what such a defect is and how to start testing for dead spots.

Similar to the obsolete CRT monitors, the picture on liquid crystal screens is formed from dots called pixels. They are combined into images displayed on the monitor. A pixel includes three subpixels (can be green, black and red). The required shade is obtained by changing the subpixels, as well as the angle of action of the network beam of a certain power.

The design of modern monitors necessarily includes a matrix. All pixels are controlled by a thin film transistor. If this part stops working, an inactive dot appears on the screen. This trail will always be there. Changes in colors on the screen will not be taken into account, since the transistor driving the pixel has failed.

Bringing a “dead” pixel back to life is quite difficult. To correct the defect, special laboratory conditions are required. Otherwise, it will not be possible to replace the faulty transistor. The average computer user will never be able to cope with such work.

There is another type of dead dots - stuck pixels. A distinctive feature of this defect is a light “grain” that is located in a darkened area of ​​the screen. The subpixel is located in one position. Because of this, his mobility is excluded. If a pixel gets stuck, it stops responding to changes in the screen image. The dot is always highlighted in a light shade.

In this case, it's not all bad when compared to a black or colored dot. The defect can be corrected at home, using software and physical actions. However, the next question arises: “Why repair the monitor yourself when the warranty is valid?”

Liquid crystal screens are characterized by a high rate of defective matrices. As a result, manufacturers came up with special rules. They provide a certain number of dead pixels on the monitor. The norms were combined into a state standard called ISO-13406. Based on this principle, monitors are divided into 4 classes, taking into account the number of defects.

A dead pixel can be of three types:

White dot in a black background image;

Black dot in white background image;

Colored dots.

There are practically no dead pixels in the first group of monitors. Manufacturers say that if such products are found to be defective, they will be immediately disposed of or the defects will be corrected under warranty.

The third component of the classification, according to the developers, has five problematic pixels of the first type, fifteen of the second and about fifty of the subsequent one.

The fourth class has the lowest quality - 50, 150 and 500 dead pixels, which belong to the first, second and, accordingly, third categories. The reliability of monitors is also bad. As a result, few people buy such products.

Considering all of the above, you need to be especially careful when purchasing or testing a device. Don't write off paying the money right away. Otherwise, you can ensure yourself a fun one.

How to get rid of dead pixels? This question worries many computer users who bought an unsuccessful monitor. We will not consider separately software products that eliminate such a defect. Let's just say in general, there are programs that effectively treat dead pixels.

Let's briefly look at their operating principle. After the utility starts working, a window with flickering dots appears on the monitor. You need to move the mouse cursor over the panel where the stuck pixel is located. Then all that remains is to wait for the result.

Users of such software say that you can get rid of stuck pixels in 20 minutes of work. When there is no positive result, re-enable the test. Only this time you will have to wait 5-10 hours.

The applications work according to a very simple scheme. Pixels change at high speed. This allows you to straighten out stuck points. There is nothing abstruse or complicated. The main thing is that it helps!

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.

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 a constantly glowing white or colored, as well as 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 should not a priori have dead pixels.
2. The second class allows the presence of no more than 5 problematic pixels of type III, and 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 blinking 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.

You are the owner of a liquid crystal monitor, which recently has a “broken” pixel. Do not rush to go to the service center; in some cases, it is quite possible to solve this problem on your own. So, first, let's figure out what the so-called “broken” pixels are.

Each pixel consists of three subpixels - red, green and blue, and is controlled by its own transistor (the familiar TFT - nothing more than a thin film transistor). In fact, there are several types of faults: the failure of the transistor is a “broken”, “defective”, “dead” pixel.

Dead pixel on the LCD monitor screen (magnification 20x)

Unfortunately, this type of malfunction is unlikely to be corrected on your own - replacing the transistor is carried out in the laboratory, but the rest are completely curable.

“Hot” pixels, they are also “stuck” - the pixel does not react to changing the image, constantly glows in one color and deprives the monitor owner of peace of mind, because in most cases it is quite clearly visible. “Dependent” are less noticeable, and often to detect them you need to use utilities like Nokia Test Monitor; they are visible only at certain values ​​of neighboring pixels, i.e. only on a certain background - a red dot on a black background, a blue dot on a green background, etc.

There are two ways to get rid of hot or dependent pixels - physical and software.
Physical.

The point of the first method is to apply physical pressure to the area of ​​the monitor with a hot or dependent pixel. It is recommended to do this with the monitor turned off and in no case with a sharp object; an ear cotton swab is ideal - just lightly massage the area of ​​the faulty pixel with it. The operation can be repeated if it didn’t work out the first time. It is important not to overdo it here - excessive force can damage the monitor!

Software.
In this case, a special utility will treat your monitor. There are quite a few of them, but almost all operate on the same principle - an image is fed to the screen with a high-speed change in the colors of individual pixels, which allows them to “stir up”.

Which one to choose is your choice, the difference is not big. I recommend using the JScreenFix service.

Then place the utility window on the area of ​​the damaged pixel and wait.

According to its authors, most damage can be corrected within the first 20 minutes, however, if this does not happen, it makes sense to extend the procedure to 8-10 hours. You can, for example, leave the utility running overnight.

If all attempts are unsuccessful, your only option is to contact the seller of the monitor for warranty - perhaps your case is covered under warranty. But this is the exception rather than the rule, since monitor manufacturers who do not want to incur colossal losses (the manufacturing process of the matrix is ​​expensive, and the result is visible only at the end) even divided monitors into categories - in each category a certain number of dead pixels is allowed. It follows that the occurrence of one or two dead pixels on the screen of a budget monitor is hardly considered a guarantee. To protect yourself from this, it is advisable to check the monitor for dead pixels immediately in the store before purchasing. This can be done using the same Nokia Test Monitor.

Nokia Test Monitor

So, now you know how to get rid of dead pixels, good luck! On my own behalf, I wish that the knowledge that you have acquired today will never have to be put into practice.