Download verification tests to check for pixels. Dead Pixel Tester - a program for determining "broken" pixels on LCD monitors

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 window blinking in different colors will appear, which must 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.

Good day.

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

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

There is one nuance: even when buying a new monitor, you can "slip" a monitor with broken pixels. The most annoying thing is that a few dead pixels are allowed by the ISO standard and it is problematic to return such a monitor to the store ...

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)

Rice. 1. Screenshots from IsMyLcdOK during testing.

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 the numbers on the keyboard). All you have to do is look at the screen carefully. As a rule, if there are dead pixels on the monitor, you will immediately notice them after 2-3 “fills”. In general, I recommend to use!

Advantages:

1. To start the test: just run the program and press the numbers on the keyboard in turn: 1, 2, 3 ... 9 (and that's it!);
2. Works in all versions of Windows (XP, Vista, 7, 8, 10);
3. The program weighs only 30 KB and does not need to be installed, which means it can fit on any flash drive and run on any Windows computer;
4. Despite the fact that 3-4 fills are enough to check, there are many more in the program.

Dead Pixel Tester (translated: dead pixel tester)

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

To start the test, it's enough to start the color modes, change pictures, select fill options (in general, everything is done in a small control window, you can close it if it gets in the way). I like auto mode more (just press the "A" key) - and the program will change colors on the screen on its own with a short interval. Thus, in just a minute, you will decide: is it worth buying 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 searching and detecting dead pixels. They work on a similar principle, with the only difference being that you (for verification) will need the Internet to access this site.

Which by the way, it’s not always possible to do it - since not all stores where they sell equipment have the Internet (connect a USB flash drive and run the program from it, but in my opinion, it’s faster and more reliable).

As for the test itself, everything is standard here: we change colors and look at the screen. There are a lot of verification options, so 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.

If after the purchase you find a broken pixel on the monitor (and even worse, if it is in the most visible place), then returning it to the store is very difficult. The bottom line is that if you have less than a certain number of dead pixels (usually 3-5, depending on the manufacturer), then you may be refused to change the monitor (of such cases).

Happy shopping 🙂

Accepting applications from 8:00 to 23:00

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 can glow red, blue, green or yellow. This is because some of the subpixels are always on or always off.

*Group of 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 a USB drive and plug it into your TV's USB port.

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

You can also use a 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 dead pixels on the display, but also the uniformity of the matrix backlight, 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!

Let's start by defining what pixels are. Pixels, roughly speaking, are the dots that make up the monitor screen. For example, a FullHD monitor has a resolution of 1920 by 1080 pixels. This means that the monitor has 1920 pixels in width and 1080 in height. Multiplying these 2 values, we get the total number of pixels - 2,073,600. These dots display the desired colors and an image is formed on the screen.

Sometimes, due to marriage or physical influences, some points lose their ability to display different colors, and constantly "burn" the same color - black, white, red or any other. These are dead pixels. And even if one of the more than 2 million dots on the screen is broken, it will constantly “irritate your eyes”. Some manufacturers allow a few dead pixels on their new monitors, which means you won't be able to return such a monitor under warranty. Therefore, it is best to check the monitor when buying, as you were advised.

It is best to take a laptop with you to the store (not every store has a test stand for testing), you can connect it to the monitor and run the test program. There are quite a few such programs, we recommend using dead pixel tester. You can download the program (checked for viruses) or on the official website.
The program is small and does not even require installation. When you start the program, the screen will turn completely black. Close the program menu and left-click anywhere.

The screen fill color will change - inspect the screen for pixels of a different color. You can also enable automatic color change at a specified interval. It is important to see all the primary colors!

If you are not prepared and you do not have the Dead pixel tester program, you can use the regular program of any version of Windows - Paint. Open Paint and make the work area larger than your screen. Apply a fill, for example, black. Press F11 to open the image in full screen. Examine the screen, then press F11 again to exit to normal mode and change the fill color. This, of course, is not as convenient as using the program, but it is quite possible to check the monitor.

Good luck with your purchase, and if you have any questions - be sure, we will be happy to help you!

How to check for stuck pixels?

We start the program. Before us will be presented several objects for testing: PC monitor, mobile device, LCD device for TV. Select the one you need (in this case, the PC monitor) and click "Monitoring of defective pixels."

The program window will appear. Select the first blinking speed.

By expanding the program window, you can see blind points that do not change. This is the stuck pixel.

In order to restore a broken pixel, you need to register the program, which costs real money. According to user reviews, Bad Crystal 2.5 FINAL restores stuck pixels only on those monitors whose life does not exceed 3-4 years.

IsMyLcdOK

The IsMyLcdOK program is a simple and understandable tool for testing PC monitors for dead pixels. The software is free. Has several useful verification tools. However, it is impossible to cure a “sticky” pixel with its help. You can run from removable media. Downloaded as an archive.