Dead Pixel Test
This page shows static fullscreen colour slides. Use the cog menu to move Next/Previous — or enable the slow auto-cycle for hands-free scanning.
- Click Start Test and enter fullscreen.
- Step through red, green, blue, white and black.
- Scan slowly corner-to-corner; dots that persist are defects.
Dead Pixel Test — FAQ
How does it work?
The test displays bright, static colour slides (R/G/B/white/black). You step manually or enable a slow auto-cycle. Defective pixels stand out against at least one colour.
What’s the difference between dead and stuck pixels?
Dead pixels are black on all colours. Stuck pixels remain lit as a constant red/green/blue sub-pixel on one or more colours.
Can stuck pixels be fixed?
Sometimes. Try the Stuck Pixel Fixer to stimulate the area. Results vary; there’s no guaranteed fix.
Is the test safe for OLED?
Yes. The slides are static and you control the timing. Avoid leaving high-brightness static images onscreen for long periods.