Dead pixel test
Cycle through solid colors at full screen to find dead pixels (always dark), stuck pixels (always one color) and backlight bleed.
Click or press any key to show the next color. Press Esc to exit.
How to test a TV for dead pixels
- Clean the screen firstDust looks like a dead pixel. Wipe the screen with a dry microfiber cloth.
- Start the test at full screenSit close and look over the whole panel on each color.
- Check each colorA dark dot on white, red, green or blue is a dead pixel. A colored dot on black is a stuck pixel.
- Use black for backlight bleedIn a dark room, bright patches near the edges on black are backlight bleed or clouding.
Questions people ask
What is the difference between a dead and a stuck pixel?
A dead pixel stays dark on every color. A stuck pixel stays lit in one color, such as red or green, and sometimes recovers on its own.
How many dead pixels are acceptable?
It depends on the manufacturer’s pixel policy and the panel class. Check the warranty terms soon after purchase, because return windows are short.
Can I test a new TV in the store?
Yes, if you can open a browser or play a full-screen color. Test at home within the return period too.