How to use
- Use the dead pixel test first to confirm it is a stuck pixel (always lit red, green or blue) and note where it is.
- Read the photosensitivity warning, tick the box and choose Flash a small square.
- Click Start, drag the square over the pixel and press + or − until it fully covers it.
- Let it run for 10–20 minutes without looking at the screen, then check again. Repeat once or twice if needed.
Options explained
- Flash a small square
- Only the area around the pixel flashes and the rest of the screen stays black, which is easier on the eyes.
- Flash the whole screen
- The entire screen cycles colours, for several stuck pixels or when you cannot find the exact spot.
- Flash speed
- By default the colour changes every frame (60 times a second on a 60 Hz screen). If that does not help, try 30 or 10 per second.
- Burn-in check
- Shows 20%, 50% and 80% gray and solid colours full screen to reveal OLED burn-in, LCD image retention and uneven areas.
Stuck pixel, dead pixel or burn-in?
| What you see | Most visible on | Can flashing help? |
|---|---|---|
| Stuck pixel | Stays red, green or blue on a black screen | Possibly, worth trying |
| Dead pixel | Stays black on a white screen | Usually not |
| LCD image retention | A faint outline of a previous image on gray | Usually fades on its own |
| OLED burn-in | Fixed marks such as a status bar or taskbar on gray or solid colours | No, the wear is permanent |
A repair routine that makes sense
- Run the square at a fast speed for 10–20 minutes, then recheck with the dead pixel test.
- If nothing changed, try a different speed or run it for 30 minutes.
- After two or three attempts with no change, the pixel is probably not recoverable. If the device is new, contact the seller while you can still return it; otherwise check the manufacturer’s pixel policy.
Normal brightness is enough while it runs. On a laptop, plug in the charger and turn off auto-lock and power saving, since a dimmed or sleeping screen interrupts the flashing.
Frequently asked questions
Will it definitely fix my pixel?
No. Flashing can only help a stuck subpixel, and success varies by screen. A dead pixel that stays black on every colour usually has a failed transistor or connection, which flashing cannot repair.
Can it damage my screen?
No. It only displays ordinary colours, like a fast-changing video. The often-shared tip of pressing on the pixel with a finger or cloth can damage the panel, especially OLED and laptop screens, so do not press hard.
Can it fix OLED burn-in?
No. OLED burn-in is uneven wear of the light-emitting material and is permanent. LCD image retention, a short-lived ghost of a previous image, usually fades by itself after showing other content or switching the screen off for a while.
Why do I have to accept a warning first?
Rapidly flashing, high-contrast colours can trigger seizures in people with photosensitive epilepsy. The flashing modes stay disabled until you tick the box. Do not watch the screen while it runs, and do not use it around anyone sensitive to flashing light.
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