OBSERVE
What to look for
- Black points on white, red, green or blue fields
- Bright points that remain visible on black
- Pixels whose colour does not change with the rest of the panel
INTERPRET
How to read the result
A point that stays dark on every field is likely a dead pixel. A point that stays red, green or blue on black or on other primaries is a stuck subpixel. A dark point on only one primary means that single subpixel is dead.
LIMITS
Limits of a browser test
Dust, reflections, scaling and protective films can resemble pixel defects. Warranty definitions and acceptable pixel counts vary by manufacturer.