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How to Check for Dead and Stuck Pixels

Dead vs. Stuck Pixels

A dead pixel is a pixel that doesn't light up at all, appearing black. A stuck pixel is one that remains a single color (red, green, or blue) regardless of what's on screen. Both can be annoying, but they're different issues.

How to Test Your Screen

The easiest way to check for dead or stuck pixels is to display solid colors across your entire screen. You'll want to test with white, black, red, green, and blue. Here's how:

  1. Open a fullscreen color tool that lets you choose any color.
  2. Start with white to look for dark spots (dead pixels).
  3. Then test black to look for bright spots (stuck pixels).
  4. Finally, test red, green, and blue to check for any color-specific issues.

What to Look For

Move your eyes slowly across the screen, focusing on different areas. A dead pixel will appear as a tiny black dot, while a stuck pixel will be a tiny colored dot. If you find any, mark their location and check if they're always visible.

What to Do If You Find a Problem

If your monitor is under warranty, contact the manufacturer. Some dead pixels are within acceptable limits, but many manufacturers will replace a screen with too many. There are also pixel-fixing tools that use flashing colors to try to revive stuck pixels, but they don't always work.

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Frequently asked questions

Who is the “How to Check for Dead and Stuck Pixels” guide for?

It is written for people checking everyday monitors, televisions, laptops, tablets, and phones without specialized diagnostic equipment. Black Screen emphasizes dark-field checks, OLED behavior, glow, backlight leakage, and bright pixel defects.

Do I need to install any software?

No. The related screen tools run in a modern browser. You only need fullscreen access and enough time to compare the display carefully. Black Screen emphasizes dark-field checks, OLED behavior, glow, backlight leakage, and bright pixel defects.

When should I contact the manufacturer?

Contact the manufacturer when a defect persists across devices or inputs, affects normal use, or may qualify under the display's warranty or pixel policy. Black Screen emphasizes dark-field checks, OLED behavior, glow, backlight leakage, and bright pixel defects.

Does How to Check for Dead and Stuck Pixels work on phones and tablets?

Yes. The page adapts to modern phones and tablets as well as laptops, monitors, and televisions. Fullscreen behavior can vary slightly by browser and operating system. Black Screen emphasizes dark-field checks, OLED behavior, glow, backlight leakage, and bright pixel defects.

Is How to Check for Dead and Stuck Pixels free to use?

Yes. blackscreen.pics provides this page without payment or account registration. Standard browser and device limitations still apply. Black Screen emphasizes dark-field checks, OLED behavior, glow, backlight leakage, and bright pixel defects.