About this test
A stuck pixel is a sub-pixel that stays on. Rapidly cycling red, green and blue can exercise the liquid crystal and often brings it back to normal. Place the flashing area over the pixel, choose a speed and duration, and leave it running. Dead pixels that are always black are usually a hardware fault that software cannot repair.
How to use this test
- Find the stuck pixel with the Dead Pixel Test and note where it is.
- Drag the flashing square over it, or choose full screen.
- Run for 10–30 minutes, then check again. Repeat a few times if needed.
Frequently asked questions
Is the pixel healer safe for my screen?
Yes. It only displays colours, which the panel is designed to do. Avoid it if you are sensitive to flashing light.
What if it doesn't work?
Run it for up to an hour. If the pixel is still stuck, stop and use the seller's return policy or the manufacturer's warranty. Don't press or rub the screen, as that can cause new damage.