Dead vs Stuck Pixel? Tell Them Apart
One tiny dot on your screen glows red, green, or blue — or stays stubbornly black. A stuck pixel is a jammed subpixel you can sometimes fix; a dead pixel is a failed one you cannot. Knowing which you have decides whether to try a fix or file a warranty claim. This guide shows the difference in sixty seconds.
TL;DR / Quick Fix
Quick fix: display solid black, white, red, green, and blue fullscreen images in turn. A pixel black on all colors is dead; one stuck on a single color may respond to gentle massage or pixel-fixing videos. Check your warranty — many makers replace panels with even a few defective pixels.
Follow these steps
- Run the color test. Open fullscreen solid-color images — black, white, red, green, blue — and inspect the suspect spot on each. Color behavior reveals the diagnosis.
- Identify dead vs stuck. Black on every color means a dead pixel (transistor failed). Stuck on one color — always red, green, or blue — means a stuck subpixel that might unstick.
- Try gentle pressure. For a stuck pixel, display a white screen and massage the spot very gently with a soft cloth for a few seconds. This sometimes unsticks the liquid crystal.
- Run a pixel-fixing video. Rapidly flashing color videos exercise the stuck subpixel. Run one fullscreen over the affected area for 10-30 minutes.
- Do not bother with dead pixels. No software or massage revives a truly dead pixel — the transistor is gone. Save your effort for the warranty claim.
- Check the warranty policy. Look up your maker's dead-pixel policy before assuming you are stuck with it. Many cover even a handful of defects within the warranty period.
What NOT to do
- Do not press hard on the screen. Aggressive rubbing can crack the panel or create new dead pixels around the old one — gentle is the rule.
- Do not run pixel fixers for days on end. If 30 minutes of flashing does not fix a stuck pixel, more hours will not either.
- Do not confuse dust with dead pixels. A speck on the screen's surface wipes away; a real defect stays put when you clean the glass.
- Do not ignore a spreading cluster. One dead pixel is cosmetic; a growing patch suggests panel damage that needs professional attention.
Frequently asked questions
What is the difference between dead and stuck?
A dead pixel's transistor failed — it stays black forever. A stuck pixel's subpixel is jammed on one color and can sometimes be coaxed back.
Can stuck pixels fix themselves?
Sometimes, yes — they can unstick with use, temperature changes, or the massage and flashing techniques above.
How many dead pixels are 'acceptable'?
It depends on the maker's policy. Budget panels may allow several; premium ones often promise zero. Check before you buy next time.