Nowadays, technology is developing at lightning speed. It would seem that yesterday, they used cash registers, but today it is impossible to imagine life without computers and gadgets. Every day there are all new models of mobile phones, scanners, laptops, tablets, and, of course, monitors for PCs. The computer screen used to be based on cathode ray tube technology . Now is the time for LCD monitors.
A man strives to improve and succeed in the race for innovations in the world of technology. We spend a lot of money to upgrade our electronic “friends”. And so you buy a cool monitor and start testing it. Watch movies, play games, etc. As a result, you notice strange black or white dots on the screen that prevent you from watching your favorite movie. This defect in the computer world is called a “broken pixel”. Let's see what kind of misfortune it is and how to deal with it.
First of all, you need to clearly understand what a pixel is. Modern monitors reproduce the image thanks to high-tech matrices. The picture on the screen consists of many points, which are called pixels. In turn, this small particle of the matrix includes three subpixels: red, black and green. In the so-called active pixel matrices, they operate using thin-film transistors. If this device fails, a black inactive dot appears, which does not change color when changing the image. This is a broken pixel. This type of problem can be eliminated only in special laboratory conditions.
There is another kind of pixel malfunction - stuck dots. In this case, a bright spot is observed on an absolutely dark background. The main reason is that one of the three subpixels is stuck. This kind of defect can be restored at home. Black dots require specialist intervention.
A completely logical question arises: "How to check the monitor for broken pixels?" Of course, it is almost impossible to determine a defect by eye. Any seller will show you a bright multi-colored picture on the screen, and not test it on various backgrounds. This is how the monitor is checked for dead pixels. You must understand that this problem appears on different backgrounds. That is, the red dot will only be visible on a green tone, etc. So when buying a product, be persistent and vigilant. Indeed, modern computer screens cost a lot of money.
Basically, checking the monitor for broken pixels is carried out using special programs. The Nokia Monitor Test utilities are very popular. The program is easy to use. Choose a color check mode and test your screen one by one using various backgrounds. If you are going to buy a new monitor, write the utility to disk and carry out diagnostics in the store itself. Thus, you will have insurance in case of a malfunction. In fact, checking the monitor for broken pixels is an elementary procedure that does not take you much time.
There are many programs that help diagnose. For example, a monitor test for broken pixels is carried out using a special program - Monitor Test 1.52. Pretty easy to use utility allows you to qualitatively diagnose any problems associated with the matrix.
Unfortunately, there are broken pixels in the matrices of laptops and tablets. This defect is common to almost all budget versions of monitors. There are permissible norms that stipulate the maximum number of faults of this kind. In almost all stores, in addition to the main guarantee, they give the so-called Zero Bright Dot. With this innovation, the client has the right to return the monitor if at least five non-adjacent broken pixels are detected. Before buying it is better to be safe. Checking the monitor for broken pixels will help you with this. After all, nobody will make you buy a product with malfunctions.