At the present time LCD TVs are firmly in our lives. They have LCD panels, the production of which is being improved every day. But, despite this, the problem of the appearance of broken pixels on the screen still remains urgent.
During the purchase of the TV, there is a risk that you will get a model with the specified defect. To avoid this, it is recommended to check the monitor for broken pixels.
Checking the screen for broken pixels
A pixel is the smallest element of a matrix of displays or a digital image; it looks like an indivisible object that has a round or rectangular shape. With it, the image is formed on the screen. The pixel contains 3 subpixels of three colors: red, blue and green. Thanks to them the display distinguishes an incredible number of different tones.
A broken pixel can manifest itself as a point that becomes noticeable against a background of some color. There are such reasons for their appearance:
- failure of the control transistor;
- the subpixel hangs in one position.
The first cause can be eliminated only with the help of appropriate equipment, namely with the help of a laser. This will not restore the broken pixel, but will make it less visible to the eyes.
In the second case, a broken pixel can be restored using special programs.
But, in order not to have to look for ways to solve this problem, it is recommended that the matrix be checked in time for broken pixels during the purchase of the TV.
How does the TV or monitor check for broken pixels? This can be done with the help of appropriate programs by connecting the TV to the system unit or laptop. But when buying in the store, this method is quite problematic.
The simplest method is to display single-color background images on the TV screen. So, to reveal the black point on the screen, a white background is output. To detect a white point, use a black background.
To conduct such a test, you need to write a set of images with colored fillings on a USB flash drive. An even better way is to record test videos.
This method is suitable for testing screens of models of different TVs. In particular, this way you can check the broken pixels on the Samsung TV.
A thorough examination of the television screen will help you prevent the purchase of poor-quality equipment with defects.