Hot Pixel vs Dead Pixel — How to Tell Them Apart & Fix Each
A hot pixel glows white on dark backgrounds (stuck fully on); a dead pixel stays dark on bright backgrounds (stuck fully off). Test on solid black and solid white to identify yours — hot and stuck pixels are sometimes software-fixable, dead pixels are not.
- Hot = white dot on black · Dead = dark dot on white · Stuck = colored dot on black
- "Burnt pixel" is slang — it usually means one of the above, or OLED burn-in
- Bright defects have stricter warranty thresholds than dark ones — a hot pixel is a stronger claim
All four pixel defects, side by side
| Defect | State | Best background to spot it | Software fix odds |
|---|---|---|---|
| Hot pixel | All sub-pixels stuck on — white dot | Black | Moderate on LCD |
| Dead pixel | All sub-pixels off — dark dot | White | None |
| Stuck pixel | One sub-pixel stuck — red, green, or blue dot | Black | Good on LCD, low on OLED |
| Burn-in (OLED) | Uneven wear — ghost image, not a dot | Solid grey | Panel compensation cycle only |
Run the dead pixel test full screen and step through black, white, red, green, and blue. The black and white screens together identify hot vs dead in seconds; the primary colors isolate which sub-pixel a stuck pixel involves.
Why hot pixels happen
Each pixel's brightness is governed by a thin-film transistor acting as a valve. A dead pixel has that valve jammed shut; a hot pixel has it jammed open, passing full brightness at all times. Heat accelerates both failure modes — hot pixels are more common on panels that run warm, and on aging displays. On camera sensors the same physics applies to photosites, which is why long exposures at high ISO reveal sensor hot pixels.
Because the transistor is stuck rather than destroyed, a hot pixel on an LCD is worth a fix attempt: run the stuck pixel fix tool over it for 20 minutes. The rapid voltage swings occasionally free a stuck-open transistor the same way they free stuck liquid crystals.
Hot pixels and warranty: the bright-defect advantage
Warranty policies distinguish bright defects (hot and stuck pixels) from dark defects (dead pixels) — and bright defects have stricter limits because they are far more visible in normal use. Under ISO 13406-2 Class II, a panel tolerates 2 bright defects per million pixels vs 5 dark ones, and several monitor brands replace panels with a single bright defect in the central zone. If you have a hot pixel, lead with "bright pixel defect" in your claim — details in the warranty guide.
Frequently asked questions
What is a hot pixel on a screen?+
A hot pixel is a pixel stuck fully on — all three sub-pixels are permanently lit, so it appears as a white dot, most visible on black or dark backgrounds. It is the opposite of a dead pixel, which is stuck fully off. Hot pixels are caused by a transistor stuck in the open state.
What is a burnt pixel?+
"Burnt pixel" is not a technical term — people use it to mean a dead pixel, a hot pixel, or OLED burn-in. Run a solid-color test to find out which you actually have: a dark dot on white is a dead pixel, a white dot on black is a hot pixel, and a ghost image of UI elements visible on grey is burn-in.
Can hot pixels be fixed?+
Sometimes. On LCD panels, rapid color cycling can reset a transistor stuck in the open state — the same fix used for stuck pixels, with somewhat lower success rates. Run a pixel fixer over the hot pixel for 20 minutes. If it persists, it is treated like any other pixel defect for warranty purposes.
Are hot pixels on camera photos the same thing?+
Related but different. Camera hot pixels are sensor photosites that read too bright, appearing as colored dots in photos — especially in long exposures and high ISO. They are in the camera sensor, not your screen. To tell them apart: a display hot pixel stays at the same screen position in every app; a camera hot pixel appears at the same position in photos viewed on any screen.
Do hot pixels count toward warranty replacement?+
Yes — hot pixels are "bright pixel defects" in warranty language, and bright defects have stricter (lower) thresholds than dark ones in ISO 13406-2 based policies. Many manufacturers replace a panel with just one or two bright pixel defects in the central area, where they would tolerate more dark ones.