Self-checking of LCD TV for dead pixels. Monitor testing Program for calculating dead pixels

One of the most common problems with a computer monitor is the appearance of dots on the screen that resemble pictures. The reason for this lies in the damaged or incorrect operation of the screen matrix, the smallest element of which is a pixel. This term refers to an indivisible rectangular or round object, through which an image is formed.

Several types of problems

Such a defect dead pixel you can look differently:

• elements that will eventually lose color are called “dead pixels” and look like dark specks against a light background;
• pixels that work at first are considered “hot” - you can get them on dark or black aphids, but they will continue to become white;
• “stuck” is the name for elements that do not change the color - they become noticeable only when the color is separated from the main images.

Important: If there are only a few pixels in one area out of order, the problem is called a “cluster of dead pixels.” At the same time, the smell develops in rectangular plants ranging in size from 2x2 to 10x10 elements, either along a line horizontally or vertically.

The number of dead pixels is acceptable

Check the monitor for the presence of defective elements of the matrix immediately upon purchase. Such verification will allow problems to be eliminated from returned goods under warranty and an examination will be carried out to prove that the cause of the problems was the factory worker, and not the actions of the supplier.

Compliant with ISO13406-2 standard, the skin monitor is subject to a limited number of defective parts. That’s why checking the monitor on bits of pixels showed their presence, which is considered the norm in such situations:

• It can be upgraded to the 4th class of brightness and can contain up to 50 hot pixels, up to 150 dead pixels and up to 500 with other types of defects;
• the matrix was released in class 3, which allows for up to 5 permanently activated elements, up to 15 elements that are permanently disabled, and up to 50 pixels with other problems;
• The monitor's wattage class is different, and up to 2 “hot” and “dead” pixels and up to 5 “stuck” pixels may appear on the screen;
• first class monitor - dead pixels are not to blame.

Insurance for the full extent of defective elements is only possible for the purchase of first class goods. However, most serial models are related to another, and when they are converted, you can find 1-2 or 5 pixels that are processed incorrectly. Although the class of the monitor shows how many defects are not taken into account by the controller - in fact, the majority of stinks occur every day.

Therefore, it is recommended to check with the store where you buy the monitor to detect damage to the matrix. However, since there is no such possibility and the product is purchased online, verification can be carried out at home. For whom should you take an online test or special program However, noticeable defects can be detected with a naked eye.

Visual verification method

The simplest monitor test for pixel bits is displayed on the screen plain background standard colors - black, white, red, green and blue. There are five options to identify “hot”, “dead” and “stuck” pixels.

You can check the monitor for defects using this method both at home and in stores. Sometimes the phones are copied to a flash drive and run on the computer connected before purchase. In addition to monochromatic images, you can quickly use test images that you have found on the Internet.

Software security

Another way to find defects is to use a program to check the monitor for pixels. You can get a quick fix both at home and in the store by recording not test images on a flash drive, but one of the verification utilities.

Dead Pixel Tester

One of the most popular programs for testing a monitor is Dead Pixel Tester. You can enchant it from the official website.

To check the login trace, enter the following steps:

1. Launch the program, which does not require installation, and select the preferred mode in the Pettern section and color using the Color Selector button.
2. Whenever necessary, set the mode change, select the Auto Color Cycle option.
3. Check that dots do not appear on the screen that do not correspond to the color of the picture.

The Exerciser function, which involves pressing a corresponding button, allows you to find defects in the entire part of the screen. This creates a rectangular area where you can drag the screen to look for broken pixels.

IsMyLcdOk

Another program that is suitable for diagnosing the matrix of a computer monitor is IsMyLcdOk. You can also download it free of charge and do not need to install it. The verification instructions appear on the screen after the first launch.

The verification is started with 4 keys – from F2 to F5. The list of available testing modes includes the display of prepared squash, straight cutlets, vertical and horizontal lines. In addition to standard tests, you can display a monochromatic or gradient image.

Online services for verification

If you want to run the utility without leaving it (for example, by downloading it and running it on a work PC), you can check the monitor for pixel bits online. There are a lot of sites that allow you to detect defects, but in between there are two simplest and most convenient for the search engine.

Monteon

To check matrix defects on this resource, just press the Test button and select one of seven types of diagnostics and variations.

Important: Unlike most other sites, Monteon.ru uses for testing not a static image, but a looping video clip. Therefore, with this help you can not only identify defects, but also control the fluidity of updating pixels on the screen.

Vanity Monitor Test

One more popular service, which allows you to quickly identify problems with the image display on the screen. To run the utility on a PC you need Adobe installations Flash Player It supports your browser. To get started, click on the text HTML Window.

Modes in the online service are selected using an additional menu that appears on the screen. And you can use it to check broken pixels not only for a computer monitor, but also for the screen of a laptop, tablet, or smartphone.

Updating of bad areas

• In some cases, the usefulness of a damaged matrix can be renewed without requiring service. You can figure out how to reduce the pixel bits on the monitor after you realize that the smell has appeared. Since you have a solid transistor, you can only clean up damaged parts of the screen with the help of a special laser. However, if the cause is a stuck subpixel, users may suffer from a defect that is stuck in the Bad Crystal program.
• The UndeadPixel utility also shows itself very well. If you have detected a dead pixel, launch the program by pressing Start in the Undead Pixel section. A square will appear on the screen that changes colors. Using the Drag & Drop function, you can move the square over the defective area. A permanent change in color may take many years - after such a procedure, pixels may be updated. To turn back the respect that is turned to life All black pixels It’s already impossible.
• Bezkoshtovna program EIZO Test Monitor (suitable for any device) contains 24 test images and helps you quickly optimize color settings, as well as check the screen for dead pixels. Given utility does not require installation. Unzip the ZIP archive and run the program with the following clicks. After this, press the “Start TEST” button. All scenarios are available in the utility, including brightness and contrast calibration. If there is no need to change any adjustments, the program will show you how to work it.
• Another way of healing is to impart physical activity. To remove damage, take a cotton swab and gently press it onto the broken pixel. Through a number of hvilins (from 10 to 15) an element that is in good order can be requested. Convert the matrix in this way to determine if the pixels are “stuck” or “hot”.

Features of turning the monitor to the store

If nothing helps, the seller, having discovered a defect, has the right to turn the monitor or exchange it for an equal product. Over a period of 14 days, the return will be required without specifying a reason: it is enough to provide a sales or cash receipt and packaging of the equipment that is being turned, for which you will not be guilty of losing traces of corruption.

If two years have already passed since the date of purchase, the buyer has the right to insure for warranty repair of the monitor or any replacement if the device cannot be repaired. However, in this situation, the technology primarily relies on examination: the results indicate for which machine the monitor is being repaired - the buyer or the seller.

Any problems in the operation of technology are extremely unacceptable and often lead to serious consequences and a complete waste of efficiency. To promptly identify problems and prevent possible problems in the near future, it is important to quickly contact specialized specialists software security. The largest representatives of this category of software are presented in this material.

A cost-free software product from domestic retailers, which has all the necessary tests, allows you to carry out comprehensive diagnostics of all the most important parameters of the monitor. Among such a variety of colors, different levels of brightness and contrasting images.

In addition, in the main window of the program, you can view hidden information about all devices that represent graphical display.

PassMark MonitorTest

This representative of this category of software is distinguished first and foremost by the fact that there are complex tests that will ensure performance I'll double-check usefulness of the monitor.

In the same way, with the same peculiarity PassMark MonitorTest the possibility of diagnosis will become touch screens. However, to replace competitors, given the programє paid.

Dead Pixel Tester

This program is designed to detect so-called broken pixels. To search for such defects, tests similar to those present in other representatives of this category of software are used.

The results of the monitoring of ownership can be sent to the website of software vendors, which theoretically will help monitor developers.

If there are any doubts regarding the correctness of the monitor's operation, it would be reasonable to consider one of the above descriptions software products. All of them can provide a comprehensive basis for testing the main parameters and help immediately identify any defects until they can be corrected.

Let's first understand what these pixels are burning. Pixels, roughly speaking, are the points that make up the monitor screen. For example, a FullHD monitor has a separate resolution of 1920 by 1080 pixels. This means that the monitor has 1920 pixels in width and 1080 in height. By multiplying 2 values, we find the total number of pixels – 2073600. These points display the required colors and an image is formed on the screen.

Sometimes, through marriage or physical actions, certain points lose their ability to represent different colors, and steadily “burn” the same colors – black, white, red or something else. These are the bits of pixels. And if you point at over 2 million dots on the screen, there will be one bit, so it will definitely become an eyesore. Some manufacturers allow the presence of a number of broken pixels on their new monitors, so you will not be able to rotate such a monitor under warranty. It’s better to check the monitor upon purchase, as you were pleased.

It is best to take a laptop with you (not in a local store there is a test stand for verification), you can connect it to the monitor and run the verification program. There are plenty of such programs, we recommend vikoristati Dead pixel tester. You can download the program (verified for virus) or on the official website.
The program is small and does not require installation. When the program starts, the screen will be completely painted with a black color. Close the program menu and left-click anywhere.

The fill color of the screen can be changed - look at the screen to see if there are pixels of a different color. You can also soak it automatic change colors at a specified interval. It’s important to look at all the main colors!

If you have not prepared for the Dead pixel tester program, you can use the regular program Windows versions- Paint. Open Paint and create a work area larger than your screen. Stamp the fill, for example, with a black color. Press F11 to open the image to full screen. Look around the screen, then press F11 again to enter the default mode and change the fill color. This, of course, is not as easy as vikorizing the program, but you can recheck the monitor.

Good luck with your purchase, and if you have lost your food, we will be happy to help you!

These are the most important considerations that a buyer faces when choosing a new TV. It's no secret that in a store, when buying a daily TV, managers will complain I'll pay for the service- check the TV screen for bits of pixels and brightness of sound. As soon as possible, you will need to contact service centers in which case you will find one or several dead pixels, but you will be informed that the TV is in good working order and there is no reason to return the defective product. Adje to ISO 13406-2 standard new TV With a number of broken pixels up to 7 pieces, it allows you to return your customer to the store without any complaints. The report on this ISO 13406-2 can be found on the Internet.

So we know that, according to the law, the rights of a companion in the 14-day period, the store selling this TV is “obligated to replace” the TV with a different one or turn back the money. This commanding word will calm you down. But not everything is as good as it seems. The store will give you a replacement TV or a refund of pennies, even if you bring an official receipt from the warranty service center about the non-attribution of the virus under the name - TV.

To save yourself time and money, I recommend checking your TV before purchasing an additional flash drive.

Checking a new TV on bits of pixels from a flash drive

What are you buying? current TV Since USB is separate, it is very easy to check the pixel bits.

photo 1

The archive below contains 9 photographs of separate production (1920x1080 pix) and a movie trailer in 1920x1080 mkv HD format. They need to be moved to a flash drive.

Insert the flash drive into the socket of the new TV.

Using the TV remote control in the menu, connect a USB flash drive. Then choose to look at the photos by selecting our test photos in the menu.

According to the blackness, 9 colors of photographs can be viewed and at least one broken pixel or many bits of pixels can be seen on the TV screen.

photo 2

By looking at the skin from 9 screensavers, you can easily determine the presence or presence of broken pixels on the TV screen even before paying for the purchase. Don't forget to check the sound quality in the movie trailer with a high volume and good sound.

photo 3

Happy shopping!

Files for checking the TV on bits of pixels

The files are archived by WinRar. Hurry up and download the archiver.

Programs for testing the monitor are constantly being used by PC owners. Perhaps, among all the information and diagnostic utilities, stench is the most popular. And all of this is because it’s too early for every consumer to get over buying a new monitor. It’s just that the vibration of the vibration generator is not enough for that model. According to the rules, the monitor must be strongly protested when purchasing, especially at low pixels.

Why are we testing the monitor:

Monitor testing programs will make it easier to check and adjust the EPT monitor. Special test images (templates) make it possible to identify defects such as lack of alignment of changes for different colors, insufficient focusing and voltage stabilization, distortion of geometry, low contrast, brightness of the light phosphor, bits of pixels. minimum standards.

RC monitors will require a different approach. All monitors based on the PK panel cannot have problems with geometry, alignment, stabilization, focus, etc. And the dispersion of parameters has disappeared without power, due to the blame of “broken” pixels, which are still growing, regardless of all the efforts of the processors. Prote, RK-monitors also test the trace. These are not just different copies, but models of different types. LCD monitors are clearly displayed in one view based on such parameters as: inertia (luminosity and blurring), color naturalness, color separation, brightness and contrast, evenness Identification. These parameters are either not specified in the characteristics, or are based on completely impossible methods.