Screen and sensor Online check

Dead pixel test

Display solid colors in full screen and inspect your screen. Compare suspicious dots against several backgrounds.

2–3 minutes·No registration·Methodology and limitations

Dead pixel test

Free

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What the test will show

Display solid colors in full screen and inspect your screen. Compare suspicious dots against several backgrounds.

How to take the test

  1. Wipe the screen and set the brightness to normal.
  2. Open full screen and switch colors.
  3. Check the suspicious point on white, black and colored backgrounds.

How to understand the result

The test does not automatically detect the defect or repair the pixels. Dust and dirt may appear as a defect.

Compare multiple runs under the same conditions. Then change one factor: connection, device, or setting. If the symptom persists, repeat the test on another device and save the conditions - this will help to more accurately describe the problem to support.

How Calcomera measurements work

What exactly does this test show?

Display solid colors in full screen and inspect your screen. Compare suspicious dots against several backgrounds.

What limitations does the result have?

The test does not automatically detect the defect or repair the pixels. Dust and dirt may appear as a defect.

If you recognize your problem

Dead pixel or dust? Inspect your screen with solid colors

How to inspect the screen on white, black and colored fields, distinguish a stable point from contamination and prepare a call for service.

Figure it out