Dead Pixel Test & Fixer
Locate dead or stuck pixels on your monitor by cycling pure colors, or attempt to revive stuck pixels using the high-frequency pixel repair tool.
Signal Source
What is a Dead Pixel Test?
A dead pixel test is a simple diagnostic tool that helps you locate malfunctioning pixels on your display. By flooding your entire screen with solid, bright colors (like pure white, black, red, green, and blue), any pixel that is dead or stuck will instantly stand out.
Dead vs. Stuck Pixels
While people often use the terms interchangeably, there is a technical difference between a dead pixel and a stuck pixel:
Dead Pixels (Black)
A pixel that receives no power at all. It will appear as a tiny black square that never changes color, no matter what is on screen.
Stuck Pixels (Colored)
A pixel stuck on a single sub-color (Red, Green, or Blue) or completely white. These are often easier to notice on dark backgrounds.
How to fix a stuck pixel?
If you find a black dot, it is usually a dead pixel and permanently broken. However, if the dot is brightly colored (stuck pixel), there is a chance you can revive it:
- Use a flashing pixel fixer tool that rapidly cycles colors over the stuck pixel to "wake" it up.
- Gently massage the area around the pixel with a soft, microfiber cloth (be extremely careful not to damage the screen).
- Leave your monitor turned off for 24 hours to let it completely discharge.
If you bought a new monitor and find dead pixels, check the manufacturer's warranty policy immediately. Many companies have a "zero dead pixel" guarantee for the first 30 days.
Frequently Asked Questions
Everything you need to know about this tool