Free Dead Pixel Fix Tool
Rapid color cycling to unstick stuck pixels — works on monitors, TVs, laptops, and phones.
Drag the repair zone over your stuck pixel
then press Start Fix
Full Screen Fix applies treatment to your entire panel. Run for 10–20 minutes for best results.
Not sure if your pixel is stuck or dead? Run the dead pixel test first →
How Dead Pixel Fixer Works
Every pixel on your screen is controlled by a transistor that switches power to three sub-pixels — red, green, and blue. When a stuck pixel forms, its transistor locks in an "on" state, forcing one or more sub-pixels to stay permanently lit at a fixed color.
Rapid color cycling works by sending alternating voltage pulses through the affected sub-pixel at high speed. The theory is that the changing electrical signal can force a locked transistor to reset back to its normal switching behavior — "unsticking" it. The faster the cycle, the more attempts the transistor has to recover per minute.
This technique only works on stuck pixels — pixels frozen at a fixed color. True dead pixels have a transistor that has physically failed and is permanently off. No software can repair a failed transistor. If your pixel appears black on every test color, it is dead; if it holds one fixed color, it may be stuck.
Step-by-Step: How to Fix a Stuck Pixel
Follow these steps in order — step 1 is the most important.
- 1
Confirm it is stuck, not dead
Run the dead pixel test first. If your pixel is black on every test color, it is dead — the transistor has failed and software cannot restart it. If it holds a fixed color regardless of background (red, green, blue, or white), it is stuck and worth treating with this tool.
- 2
Position the repair zone
Drag the repair zone over where your stuck pixel sits on screen. For the most aggressive treatment, use Full Screen Fix — this applies the rapid color cycling to your entire panel rather than one targeted area.
- 3
Start the fix and run for 10–20 minutes
Click Start Fix and leave it running. At 10 minutes, pause and examine the pixel carefully. If it has not recovered, resume for the remaining 10 minutes. Longer exposure gives the transistor more chances to reset.
- 4
Check the result and decide next steps
If the pixel recovered, great. If it has not changed after two full sessions, further cycling is unlikely to help. At that point, check your dead pixel warranty options — many manufacturers replace stuck pixels under warranty.
Dead Pixel vs Stuck Pixel — Which Can Be Fixed?
The two terms are often used interchangeably, but they describe different hardware failures with very different outcomes for repair.
Dead Pixel — Cannot be fixed with software
The transistor has physically failed and is permanently off. The pixel appears black on every background color. No electrical signal can restart a failed transistor. Your only options are a warranty claim or panel replacement.
Stuck Pixel — May respond to this tool
The transistor is locked "on" — one or more sub-pixels stay lit at a fixed color (red, green, blue, or white) regardless of what the screen is showing. Rapid cycling has a real chance of resetting a stuck transistor.
Quick test: run the dead pixel test and cycle through all colors. If your defective pixel shows as black on every color, it is dead. If it stays a fixed color (anything other than black), it is stuck and worth treating here.
Manual Fix Methods
If the software fixer has not worked after two full sessions, two physical methods sometimes succeed on LCD panels. Neither works on OLED. Both carry a small risk — proceed carefully.
Pressure method
Turn off your screen. Wrap a blunt object (pencil eraser works well) in a dry microfiber cloth. Apply gentle, sustained pressure directly over the stuck pixel for 10–15 seconds while turning the screen back on. The goal is to encourage the liquid crystal below the sub-pixel to redistribute. Apply only light pressure — enough to barely flex the screen. Do not push hard enough to create new bright spots.
Heat method
Gently warm the stuck pixel area with a warm (not hot) cloth for 30 seconds. Temperature changes can alter liquid crystal viscosity and sometimes restore flow. Never point a heat gun or hot air dryer at a screen. This method has a low success rate and is only worth trying on panels with no active warranty. Avoid heat on OLEDs entirely.
When the Fixer Doesn't Work
If the pixel is still stuck after two 20-minute sessions and the physical methods have not helped, further software treatment is very unlikely to succeed. The fault has become permanent.
Check your warranty first
Most manufacturers follow ISO 13406-2, which treats one or two stuck pixels as acceptable. But Dell's Premium Panel Guarantee, LG's OLED zero-defect policy, and some ASUS ProArt tiers cover even a single stuck pixel. Knowing your brand's threshold is essential before calling support.
Dead pixel warranty guide — all brands →If you are within your retailer's return window (typically 15–30 days), you can return the screen without invoking the manufacturer warranty. Retailers like Best Buy have their own dead pixel return policies that are sometimes more generous. Document the defect with a photograph before you contact anyone.
Looking for the full-featured monitor test suite? MonitorTest Pro has 20+ display tests →
JScreenFix vs Our Tool
JScreenFix was the original browser-based stuck pixel fixer, but it relied on Java — a browser plugin that Chrome, Firefox, Edge, and Safari have all removed for security reasons. The JScreenFix website still loads, but the repair applet does not run in any modern browser. If you are searching for a JScreenFix alternative, you are in the right place.
| Feature | JScreenFix | This Tool |
|---|---|---|
| Works in modern browsers | ✗ No | ✓ Yes |
| Mobile support | ✗ No | ✓ Yes |
| Download required | App | ✗ No |
| Draggable repair zone | ✓ Yes | ✓ Yes |
| Full screen fix mode | ✓ Yes | ✓ Yes |
| Session timer | ✗ No | ✓ Yes |
| Free | ✓ Yes | ✓ Yes |
For a full roundup of JScreenFix alternatives including desktop apps, see our JScreenFix alternatives guide →
Frequently Asked Questions
Does the dead pixel fix tool actually work?▾
Stuck pixel fixers work in a meaningful share of cases — success depends on panel type, how long the pixel has been stuck, and how severe the transistor fault is. OLED and AMOLED panels have a lower fix rate than LCD. The tool is free and takes 20 minutes, so it is always worth trying before pursuing a warranty claim.
How long should I run the stuck pixel fixer?▾
Run for a minimum of 10 minutes, targeting 20. Some stuck pixels recover in the first few minutes; others require a full session. If there is no change after two 20-minute sessions, the pixel is unlikely to respond further.
Can I use this to fix a dead pixel on my phone?▾
Yes — the tool works in any mobile browser. Tap Full Screen Fix for maximum coverage. Note that AMOLED screens (common in Android phones and iPhones) have a lower fix success rate than LCD screens because the pixel failure mechanism differs.
What happens if the fixer does not work after 20 minutes?▾
If the pixel is still stuck, it is very likely a hardware-level fault. Check your device warranty — most manufacturers will replace screens with stuck pixels, and some brands cover even a single defect. See our dead pixel warranty guide for brand-by-brand thresholds.
Is rapid color cycling safe for my screen?▾
Yes. Rapid color cycling at the software level does not stress display hardware — it operates within normal display parameters. The physical pressure method carries a small risk of creating new pressure-induced stuck pixels, so apply only gentle pressure if you try it.
Does JScreenFix still work in 2026?▾
JScreenFix no longer works in modern browsers. It relied on Java, which Chrome, Firefox, Edge, and Safari have all removed for security reasons. The JScreenFix website exists but the applet cannot run. Browser-native tools like this one are the current standard — no Java, no download, any device.