Dead Pixel Tester is a program for determining “dead” pixels on LCD monitors. BenchmarkHQ - Utilities - Monitor A program for checking the laptop matrix

A program for identifying “dead” pixels on LCD monitors. The negative quality of LCD displays is possible availability defective pixels. Such a pixel may have various errors in the display of red, green and blue colors, and may also be illuminated or darkened. It is used to identify such defects. Dead program Pixel Tester. It is a simple and reliable way testing monitors at home.
Dead Pixel Tester fills the entire screen area with a user-selected color, making the damaged pixel clearly visible. This kind of point does not pose any negative effects on the monitor, but contributes to additional fatigue of the user's eyes.

Program status: Free
OS: Windows Vista, XP, 2000, 7
Interface: English
Developer: Data Product
Size: 272 kB
DOWNLOAD FROM DEVELOPER'S SITE
A short excursion into the problem:

It would seem, what is the problem? If the transistor does not work, then the equipment can be repaired or exchanged under warranty. However, the panel production technology is so complex that it is impossible to obtain large quantities of panels without dead pixels impossible. And if only “clean” panels were put into production, the cost of TVs would be very high.
Therefore, “dead pixels” are divided into three types, and all panels are divided into 4 classes (specified in the ISO-13406 standard).
Type 1 - white pixel on black background Not.
Type 2 - black pixel on a white background.

Type 3 - colored (red, blue, green, yellow).
First grade prevents the appearance of “dead pixels”
Second class allows the presence of 2 defects of types 1 and 2, as well as 5 defects of type 3. This class is the most common in the TV market. Therefore, the presence of up to five defective pixels, according to manufacturers, IS NOT A DAMAGE.
Third class - may have five dead pixels of type 1, 15 of type 2 and 50 defects of type 3.
Fourth grade - allows for the presence of 50, 150 and 500 defects of types 1, 2 and 3, respectively.
Determine the presence of “dead pixels” by eye when watching TV programs or DVD discs it is often difficult or even impossible. For example, a stuck pixel may only appear as a green dot on a red background and in the corner of the screen. You can watch TV for a long time and not notice it, because the dot is small, and the image changes quite quickly and the combination of these particular colors in this place is not often found. In addition, “dead pixels” can appear over time as a result of breakdown of the transistor responsible for this point on the screen.

Today I will tell you about one very small, but very important program that will save the lives of millions of your nerve cells after purchasing a monitor or laptop.

The name of this program is IsMyLcdOK and it will help you check for defective pixels any LCD screen.

The official definition of the expression “dead pixels” you can find it on Wikipedia, but the site site is different from others in that here I explain complex things to you in simple language, in pictures and sometimes even with humor.

For example, this is how this article describes the concept of disk defragmentation using the example of a simple school ruler.

So, what are “broken” pixels according to the website…

Imagine that any LCD monitor consists of a huge number of tiny light bulbs that can (and should) change their color depending on what signal is received from the video processor.

Thanks to this, everything that you see on the laptop screen or on the LCD monitor of any computer is formed.

But, as in real (not digital) life, sometimes, some light bulbs (pixels) try to stand out from the crowd of their relatives and do not want to change color...

Naturally, the neighboring pixels do not like this behavior and they beat this show-off...

This is how the expression “broken” pixel appeared.

The description above is, of course, funny, but all the fun will disappear when you come home from the store with a brand new laptop or an expensive, wide-screen HD monitor, turn on the purchase and find a dot that does not change its color.

Believe me, this is a very sad feeling. My son and I had a chance to try it out six months ago, after buying a laptop.

The most annoying thing is, firstly, that you may not notice the “dead” pixel right away. A pixel can “get stuck” on any color (but most often it is white) and “shoot” in your eyes, even after a week.

A detected “broken” pixel will remain a thorn for the rest of the product’s life. It is very, very rare that you can get rid of this problem with the help of special programs.

Secondly, if you find it at home, and not in a store, when purchasing, in 99.9% of cases you WILL NOT EXCHANGE the product.

This is such a common defect that all manufacturers have hedged their bets and introduced an acceptable number of “dead” pixels, at which the product is not covered by the warranty and is not considered defective at all.

For some reason they “forgot” to write this in their advertising brochures.

Let's summarize - you MUST check laptops and monitors for “broken” pixels IN THE STORE BEFORE BUYING!

IsMyLcdOK - “broken” pixels will not be hidden

This is where we return to the IsMyLcdOK program. It is (portable), which means that it does not need to be installed anywhere. You copy it onto a flash drive and go to the store, where you ask to check the product using this program.

If the consultant refuses you, feel free to send him to the butterfly farm and go to another store, where first of all they think about the buyer, and not about how to push all the accumulated “not defective” to the mugs.

Have you found such a store? Launch the IsMyLcdOK program from the flash drive by clicking on the shortcut...

The following will be displayed on the entire screen...

The check consists of completely flooding the entire monitor with various colored backgrounds and visually identifying the rebel pixel. If it is there, you cannot help but notice it!

To do this, press the keys on the keyboard one by one, numbered from 1 to 0. To return to main screen program - the F1 key, and to exit the program - the Esc key.

I still don’t understand what the durability test (available via F5) is for, but I got out of it by simply pressing Enter and admiring the change of backgrounds in automatic mode.

How to check for stuck pixels?

Let's launch the program. We will be presented with several objects for testing: PC monitor, mobile device, LCD device for TV. Select the one you need (in this case, a PC monitor) and click “Monitor defective pixels.”

A program window will appear. Select the first flicker speed.

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

In order to restore a dead 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 operating life does not exceed 3-4 years.

IsMyLcdOK

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

Acceptance of applications from 8:00 to 23:00

A little 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 “dead pixels”:

*Dead pixels- these are pixels that do not light up (always turned 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 light up red, blue, green or yellow. This happens because some of the subpixels are always on or always off.

*Group of defective pixels- these are several defective pixels in a 5x5 pixel square.

(click on image for larger view)

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

Checking using a USB flash drive

Using these images, you can check your TV for manufacturing defects such as:

• defective pixels;
• matrix glare;
• illumination unevenness;

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

Using the built-in media player, scroll through all the pictures - the matrix defect will be much easier to notice!

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

Checking using a Laptop

You can also use special program for testing the TV or monitor screen

To do this, you need to connect the TV to your 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 matrix response time.

You can download a program to check your TV screen for dead pixels using the link: DOWNLOAD

Check with a Professional

You can Call a wizard to set up your TV, as well as checking your TV or monitor screen for dead pixels!