How to Check a Monitor for Dead or Stuck Pixels
Use multiple solid colors to spot persistently dark or colored pixels.
Before you begin
Start with reversible settings checks. Keep your device supported and powered safely. Do not force connectors, open sealed batteries or try high-voltage repair steps.
Step-by-step testing instructions
- 01
Clean the screen
Wipe gently with an appropriate dry cloth so specks do not mimic pixel defects.
- 02
Set normal brightness
Avoid maximum brightness if uncomfortable and use typical viewing distance.
- 03
Cycle black and white
Look for bright points on black and dark points on white.
- 04
Cycle red, green and blue
Watch for an area that fails to change color appropriately.
- 05
Check the manufacturer policy
Document defects for warranty claims and avoid pressure-based fixes.
Check the result.
A repeated fixed point across all images is worth documenting, but this does not specify repair eligibility.
Open the related test ↗When to get professional help
If the same problem occurs in multiple compatible applications or devices after safe checks, follow the manufacturer's exact support instructions or ask a qualified repair professional. A browser test cannot prove every hardware component is healthy.