Dead Pixel Test & Stuck Pixel Fixer (Online Tool)
Locate and fix screen defects. Use the color buttons to find dead pixels. Use the 'Start Fixer' button to attempt repairs on stuck pixels (flashing light therapy).
How to Use the Fixer Tool
If you find a pixel that is stuck on a specific color (not black), try our 'Start Fixer' tool.
- Locate: Cycle through the solid colors (Red, Green, Blue) to find the dot that doesn't change color.
- Fix: Click 'Start Fixer'. This will rapidly flash colors on your screen.
- Duration: Drag the flashing box to the stuck pixel area (or leave it full screen). Run it for 10-20 minutes. The rapid voltage changes can sometimes 'unstick' the liquid crystal.
- Warning: The fixer creates flashing lights. Do not look directly at the screen if you have photosensitive epilepsy.
Screen Defect FAQ
Dead Pixel vs. Stuck Pixel?
A Dead Pixel is black (power off) and usually permanent. A Stuck Pixel is red, green, or blue (power stuck on) and can often be fixed with our flashing tool.
Does the fixer work on iPhone/Android?
Yes, stuck pixels can happen on OLED and LCD mobile screens too. Run the fixer in full-screen mode on your phone.