Dead Pixel Test - Check Your Monitor Instantly
The easiest way to spot dead pixels, stuck pixels, and backlight defects. Cycle through colors to inspect your screen.
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How to Properly Check for Dead Pixels
Before you start, we highly recommend cleaning your screen. Dust and smudges can look exactly like dead pixels, leading to false alarms. Use a microfiber cloth to wipe the surface gently.
1. Cycle Through the Colors
A comprehensive test requires checking each primary color. This tool allows you to fill your screen with pure White, Black, Red, Green, and Blue. Each color reveals different types of defects.
2. What to Look For
- Dead Pixel: A black dot on a white background. This means the pixel is powerless.
- Stuck Pixel: A bright colored dot (Red, Green, or Blue) on a black background. This means the sub-pixel is permanently "on".
- Hot Pixel: A permanently white dot on a black background.
3. Found a Defect? Try Fixing It
If you discover a stuck pixel (colored), it might not be permanent. Use our Dead Pixel Fixer tool, which flashes colors rapidly to attempt to unstuck the crystal. However, black "dead" pixels are usually permanent hardware failures.
Pixel Defect Guide
| Type | Appearance | Cause |
|---|---|---|
| Dead Pixel | Black Dot | Transistor failed (Off) |
| Stuck Pixel | Colored Dot | Transistor stuck (On) |
| Hot Pixel | White Dot | Always passing light |