Dead pixel tester

Identify dead pixels and repair stuck pixels on your LCD and OLED screens

Before starting the test, clean the display with a soft fabric. Once the test begins, the screen will display a single color. Use the left mouse button or the space key to cycle through black, white, red, green, and blue. To exit the test, press the esc key.

Pixels are extremely tiny, so closely inspect all the test screens. Allow some time for your eyes to adjust to the screen's brightness.

Repair unstuck pixels

When enabled, the cursor changes to a circle filled with random noise. Move this circle over the area where the stuck pixel is located and keep it there for a while. This action aims to stimulate the pixel and hopefully restore its normal function. Periodically move the circle away from the pixel to check if the issue has been resolved. If the pixel remains stuck, repeat the process until it becomes unstuck.

Enable noise circle