The program for checking the matrix of a laptop. Monitor Test by PassMark MonitorTest

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A bit about dead pixels!

Often in LCD, LED and even OLED TVs there are defects such as Dead pixel. It usually looks like a dot in an arbitrary area of ​​the screen, of any color.
There are 4 types of "Broken pixels":

*Dead pixels are pixels that are not lit (always off). On a white background, it looks like a black dot.

*Hot pixels- on the contrary, they are always on and on a black background they look like a white dot.

*Stuck pixels may glow red, blue, green, or yellow flowers. This is because some of the subpixels are always on or always off.

*Group defective pixels is a few defective pixels in a 5x5 pixel square.

(click on image for larger view)

Many stores offer a TV screen test for a fee. Of course, this procedure will provide you with a more comfortable viewing of TV programs. But not many people prefer to overpay for something that is easy to produce on their own.

Checking with a USB flash drive

Using the image data, you can check your TV for factory defects such as:

• defective pixels;
• matrix highlights;
• backlight unevenness;

Copy these images to USB stick and connect it to USB port your TV.

Scroll through all the pictures using the built-in media player - it will be much easier to notice the matrix defect!

If there is a dead pixel, you will definitely see it as a black, white or colored dot in any area of ​​the screen.

Checking with a laptop

Also you can use special program to test the screen of a TV or monitor

To do this, you need to connect the TV to a computer or laptop using an HDMI cable and run the program.

This program allows you to evaluate not only the presence or absence of broken pixels on the display, but also the uniformity of the matrix illumination, geometric distortions and the response time of the matrix.

You can download the program for checking the TV screen for broken pixels at the link: DOWNLOAD

Checking with a Professional

You can call the wizard to set up the TV, as well as checking the screen of your TV or monitor for dead pixels!

One of the most common problems with modern monitors is dead pixels. Finding a stuck or dead pixel is sometimes a difficult task, so it is best to use special software to find such defects.

Check for dead pixels

- a tiny program that will help identify broken pixels on the monitor screen, in some cases it allows you to restore stuck ones.

The principle of working with the program is quite simple, at startup, the user can change the fill color of the entire screen and look for stuck and broken pixels already on a solid color. You can choose a color from a ready-made set, or choose your own shade.

The drop-down list "Pattern" allows you to select the desired pattern for screen calibration.

How to recover a stuck pixel?

As mentioned above, in addition to detecting dead pixels, the program in some cases is able to restore them.

The reader must have heard of at least two unpleasant pixel states, these are stuck pixel(a pixel that, for some reason, has stopped switching) and dead pixel(the pixel that failed, burned out). So, in some cases, the program allows you to restore stuck pixels, without having to contact a service center.

To try to recover a stuck pixel, click on the “Exerciser” button. A blinking different colors a window that needs to be placed in the place on the screen where the defect appears and let it work for a while. The width and height of the window can be slightly increased or decreased by capturing the borders and shifting in the desired direction.

AT modern world The lion's share of professions is associated with working at a computer. At the same time, regardless of whether it lasts a couple of hours in front of the monitor screen or far exceeds two-thirds of the day, it is important to take care of eye health by properly adjusting the brightness and color rendering of the display. The same applies to pastime for the purpose of entertainment. In professional activities related to the processing of digital images, the quality of the display of colors, shades, contrast plays a significant role, and the factory settings do not always correspond to the personal requirements of the user.

TOP programs for checking and adjusting the monitor.

Everything here depends not only on the resources of the device and the use of its potential in its entirety, but also on individual perception, which varies, including changes in external factors, such as the lighting of the room where the work is being done, and the environment for the propagation of the light flux. Taking into account the working conditions, as well as personal visual preferences, sensitivity to light, the monitor is adjusted.

You can make spending time at the computer more comfortable with standard tools. operating system, parameter setting is available from the Control Panel. At the same time, if the goal is to bring the conditions closer to ideal ones, adjusting them as much as possible to your own requirements, it is better to use special software that offers a wider range of possibilities than standard tools. When diagnosing screens, the programs help to identify inconsistencies and adjust the parameters to optimal values. Software that allows you to adjust the operation of the display has different functionality and can be useful to every user, regardless of the purpose for which the computer is used.

The task of setting up the display is both immediately after the purchase of the device, and after a certain period of operation, since over time the matrix wears out and no longer displays colors as before. Sometimes a monitor comes with its own software with reference samples, designed for specific model, but there is also universal means. You can test the display and adjust its parameters based on the test results using special online services or software that requires installation. Software tools can serve to check the monitor for broken pixels, as well as include their treatment if detected. Diagnostics, performed in a timely manner, will allow in the future to avoid unpleasant moments associated with incorrect operation or complete failure of the device.

Multifunctional monitor setup program. The software is distributed on a commercial basis, but there is a trial period. Ultra Mon options allow you to configure and manage multiple displays overnight, you can create and drag windows between devices, duplicate and move desktops, stretch the Taskbar across multiple monitors, create separate profiles, etc. Despite the scale of functionality, the program is easy to learn and not requires user specific knowledge. Supported by Windows 8 and above, for earlier versions of the OS it is necessary additional setting compatibility for 16-bit applications.

A paid program for checking the monitor and selecting the optimal parameters. Allows you to test the performance of LCD displays, CRT devices (cathode ray tube) using a set of tests, includes the ability to detect dead pixels. The program has a simple interface, is easy to manage and works on all versions of Windows OS with any supported resolution and color depth of the video card.

Free program for testing a monitor from a Russian manufacturer with detailed background information. The product has decent functionality, allowing you to perform diagnostics various characteristics devices. Among the possibilities are checking the uniformity of illumination, legibility of image details, linearity and discreteness of the matrix, etc. There is also an option to detect stuck pixels. The user is given a choice of display resolution.

A utility for checking the monitor and setting up basic settings from Nokia, which does not require installation and is equipped with detailed help information for working with the software. Although the title is a little misleading, software tool involves checking the quality of computer monitors and video cards. Allows you to adjust the contrast, color rendering, geometry and other key parameters. The utility is Russified and is freely available.

The program for setting the parameters of one or more monitors at the same time has excellent functionality, supports a large number of video cards regardless of the manufacturer, including already retired ones. Combined with the convenience and simplicity of the interface, the program allows you to access 500 display and video card settings, there is instruction on how to use all the features of the software. Power Strip determines all screen parameters and provides geometry correction, can change performance and clock frequency flicker. The program is self-updating, supports various operating systems. Among the shortcomings is a significant load on memory and PC resources, the software is paid.

An easy-to-manage multifunctional tool for simultaneous work with multiple monitors. Capabilities software product offer emulation on secondary displays of the Taskbar, Start button and other familiar Windows services. Supported preview, cloning the Task Switcher window to all devices, creating configurations in the form of Desktop profiles, instant navigation between them and many other options are available. The software is paid.

A free program for checking and repairing dead pixels on LCD panels. The interface is quite simple, so it will not be difficult for even an inexperienced user to understand the functionality of the UD Pixel. The principle of operation of the software is the high-speed change of colors of "stuck" pixels. The program does not give a 100% guarantee of "resurrection" (like any other), but in most cases the procedure is successful. After testing and detecting dead pixels on the monitor, the user can select the flickering speed of the colors and begin the recovery process, which by the way will take a lot of time. This fact will not affect the operation of the device in any way, while other settings will have to wait.

Software for checking LCD TV or computer monitor on broken pixels, that is, those that glow with the same color. Innjured Pixels software performs high-quality diagnostics, while, without requiring installation on a PC, it is distributed free of charge. The utility can be used only for the purpose of testing, it does not allow reanimating the pixels of the functionality. positive moment in that you can diagnose the device right at the place of purchase before purchase.

Similar to the utility described above, this tool allows you to perform a procedure for checking LED and LCD monitors for dead pixels without treatment. Is My LCD OK offers the user high-quality diagnostics with a decent set of tests, the software is completely free, installation is not required, and it can be launched from any removable drive.

Another program that provides the ability to detect dead pixels. The software does not require installation, it contains a decent set of tests for a thorough check. The interface is simple and clear, despite being in English.

Since the human eye will not be able to accurately determine how incorrect the display image is due to the natural features of the structure and the ability to adapt, it is advisable both when buying a new monitor and in order to prevent the old one from using special software that allows you to detect defects in time and avoid unforeseen expenses. Choosing the right software is a purely personal matter, it all depends on the requirements for the program, the need to perform certain tasks and the convenience of the user.

One of the most common computer monitor problems is the appearance of individual dots on the screen, the color of which does not match the picture. The reason for this is the damage or malfunction of the screen matrix, the minimum element of which is considered to be a pixel. This term refers to an indivisible rectangular or round object with which an image is formed.

Several types of problems

Such a defect as dead pixel may look different:

• elements that always remain off are called "dead pixels" and will appear as dark dots on a light background;
• pixels that are always working are considered "hot" - you can see them on a dark or completely black background, where they remain white;
• Stuck elements are elements that do not change color - they become noticeable only when the hue does not match the main image.

Important: if several pixels in one area fail at once, such damage is called a “group of dead pixels”. Together they stack into rectangles ranging in size from 2 x 2 to 10 x 10 elements, or even into lines horizontally or vertically.

Permissible number of dead pixels

Check the monitor for damaged matrix elements immediately upon purchase. Such a check will avoid problems with the return of goods under warranty and an examination proving that the cause of the malfunction was a factory defect, and not the user's actions.

In accordance with the ISO13406-2 standard, a certain number of defective items is allowed for each monitor. Therefore, even if checking the monitor for dead pixels showed their presence, this will be considered normal in such situations:

• the product belongs to the 4th quality class and can have up to 50 "hot" pixels, up to 150 "dead" and up to 500 with other types of defects;
• the matrix is ​​released according to class 3, which allows for up to 5 permanently on, up to 15 all the time non-working elements, as well as up to 50 pixels with other problems;
• the quality class of the monitor is the second, and up to 2 “hot” and “dead” pixels and up to 5 “stuck” pixels can appear on the screen;
• first class monitor - dead pixels should not be at all.

You can count on the complete absence of defective items only when buying first-class goods. However, most production models refers to the second, and when checking them, you can find 1-2 and even 5 incorrectly working pixels. Although the monitor class indicates how many defects are not considered defects, in fact, most products do not have them at all.

It is recommended to determine the presence of damage to the matrix in the store where you buy the monitor. However, if this is not possible or the product is purchased online, the check can be carried out at home. For this, an online test or a special program is used, although noticeable defects can also be detected with the naked eye.

Visual check method

The simplest monitor test for dead pixels is to display a solid background of standard colors - black, white, red, green and blue. These five options will allow you to detect "burning", "dead" and "stuck" pixels.

You can check the monitor for defects in this way both at home and in stores. In the latter case, the backgrounds are copied to a flash drive and run on the computer connected to the purchase. In addition to monochrome images, you can use test pictures by finding them on the Internet.

Software

Another way to find defects is to check the monitor for dead pixels. You can use a suitable application both at home and in a store by writing not test images to a USB flash drive, but one of the verification utilities.

Dead Pixel Tester

One of the most popular programs to test the monitor - Dead Pixel Tester. You can download it from the official site.

To check, follow these steps:

1. Launch an application that does not require installation and select the appropriate mode in the Pettern section and color using the Color Selector button.
2. If necessary, set the mode change using the Auto Color Cycle option.
3. Check if dots appear on the screen that do not match the color of the picture.

The Exerciser function, activated by pressing the corresponding button, allows you to find defects in a specific part of the screen. It creates a rectangular area that you can drag around the screen looking for dead pixels.

IsMyLcdOk

Another program suitable for diagnosing computer monitor matrices is IsMyLcdOk. It can also be downloaded for free and does not require installation. Instructions for performing the test appear on the screen after the first launch.

The check is started by 4 keys - from F2 to F5. The list of available test modes includes the display of colored stripes, rectangles, vertical or horizontal lines. Except standard tests, you can display a single-color or gradient image.

Online services for verification

If you cannot download and run the utility (for example, due to download and run restrictions on a working PC), you can check the monitor for dead pixels online. There are quite a few websites that allow you to find defects, but among them there are two of the simplest and most convenient to use.

Monteon

To check the matrix defects on this resource, just press the button to start testing and select one of the seven types of diagnostics and its variation.

Important: unlike most other sites, Monteon.ru does not use a static picture for testing, but a looped video. Therefore, with its help, you can not only find defects, but also control the refresh rate of pixels on the screen.

Vanity Monitor Test

Another popular service that allows you to quickly detect problems with displaying images on the screen. To run the utility on a PC, you will need installed by Adobe Flash Player and the browser that supports it. To start checking, press HTML inscription Window.

Modes in the online service are selected using the drop-down menu at the top. And you can use it to check dead pixels not only for a computer monitor, but also for the screen of a laptop, tablet, and even a smartphone.

Recovery of damaged areas

• Sometimes the performance of a damaged matrix can be restored without contacting the service. You can decide how to remove dead pixels on the monitor after you understand where they came from. If the control transistor fails, the damaged screen element can only be removed using a special laser. However, if the cause is sub-pixel freezing, the user can get rid of the defect by applying the Bad Crystal program.
• The UndeadPixel utility also performs very well. If you find a pixel error, launch the app by clicking "Start" in the "Undead Pixel" section. The screen will display a square that changes colors. Using the Drag & Drop function, you can move the square over the defective area. A permanent change in color should occur within a few hours - after such a procedure, the pixel can be restored. Note that bring back to life completely black pixels already impossible.
• The free EIZO Test Monitor (suitable for any device) contains 24 test images and helps you quickly optimize color settings and check the screen for dead pixels. This utility does not require installation. Unpack the ZIP archive and launch the application with a double click. After that, click on the "Start TEST" button. Eight scenarios are available in the utility, including brightness and contrast calibration. If there is a need to change any settings, the program will tell you how to do it.
• Another method of treatment involves physical exposure. To remove damage, take a cotton swab and gently press on the dead pixel. After a few minutes (from 10 to 15), the failed element can work. It will be possible to cure the matrix in this way if the pixels were “stuck” or “hot”.

Features of returning the monitor to the store

If all else fails, the user who finds the defect has the right to return the monitor or exchange it for an equivalent product. Within 14 days, the return is made without indicating a reason: it is enough just to provide a sales or cash receipt and packaging of the returned equipment, which should not leave traces of use.

If 2 weeks have already passed since the date of purchase, the buyer has the right to count on warranty repair of the monitor or its return if the device could not be repaired. However, in this situation, the equipment is first sent for examination: according to its results, it is determined at whose expense the monitor will be repaired - the buyer or the seller.

A program for detecting defects in LCD monitors - checking for broken pixels, scratches on the matrix become more noticeable. IsMyLcdOK is a set of tests for LCD monitor such as screen fill with color, screen fill with gradient, horizontal and vertical lines, colored rectangles and stripes. The utility has a test to determine the durability of the matrix and the BitBlt MB/sec check is implemented. with FPS count - IsMyLcdOK displays interleaved frames.

Defective pixels

What you need to know when buying an LCD monitor or LCD TV about pixels? A pixel is the smallest object and component of a digital image. In a liquid crystal monitor, there are millions of pixels on the matrix, each pixel has three cells for outputting red, blue and green colors, which make up the overall picture of the image. Are there dead pixels? Then the result is a poor-quality display of the picture on the screen. Defective pixels, as well as nerves are not restored. IsMyLcdOK, highlighting the screen with different colors, lines and stripes, allows you to identify defective pixel cells, thereby helping to avoid purchasing low-quality monitors and TVs.