Ultimate Guide to Dead Pixels
Buying a new monitor or smartphone is exciting, but finding a defect can be heartbreaking. This guide explains everything you need to know about screen defects.
Dead vs. Stuck Pixels: What's the Difference?
⚫ Dead Pixel
A pixel that remains permanently black. It receives no power. Hard to fix.
🔴 Stuck Pixel
A pixel stuck on a single color (Red, Green, or Blue). Often caused by a transistor error. Can often be fixed!
How to Use This Tool
- Clean your screen: Dust can look like dead pixels. Use a microfiber cloth.
- Start the test: Click the big button above to enter Fullscreen Mode.
- Cycle colors: Tap or use arrow keys to switch between Red, Green, Blue, White, and Black.
- Inspect closely: Look for any dots that don't match the background color.
Warranty Policies (2025)
Did you find a dead pixel? Here is what major manufacturers say:
- Dell: "Premium Panel Guarantee" covers even 1 bright pixel for UltraSharp monitors.
- Apple: Genius Bar discretion. Usually requires multiple anomalies.
- ASUS/Acer: Often follow ISO 13406-2 standard (allows 3-5 bad pixels on cheaper models).