What to look for
- Stuck or bright: white or colored on black.
- Dead or dark: dark on white or a primary color; not glowing on black.
- Dust: often irregular, soft-edged, or affected by cleaning or screen-protector removal.
- App, cable, or input problem: visible in screenshots viewed on another display or changes when you switch the input or app.
Use this order
- Clean the surface.
- Check black and white.
- Check red, green, and blue.
- Confirm with the display’s built-in test.
Common questions
Is a white pixel dead or stuck?
A white point that stays lit on black is typically described as a bright or stuck pixel, not a dark/dead pixel.
Why does the dot disappear on one color?
That can reveal which red, green, or blue subpixel is not responding normally. Record the behavior instead of guessing the label.