TV Screen Test - Dead Pixels, Burn-In and Uniformity
Run a TV screen test for dead pixels, backlight bleed, dirty screen effect, OLED burn-in, image retention and color uniformity using fullscreen patterns.
Quick answer
A TV screen test uses fullscreen colors, gray fields and dark backgrounds to check dead pixels, dirty screen effect, backlight bleed, color uniformity and OLED burn-in.
Method: ScreenTestKit generates the test surface in your browser. Results depend on visual inspection; the site does not read or diagnose physical panel hardware.
How to use this test
- Use the TV picture mode and brightness you normally watch.
- Open the test in a TV browser or from a connected computer and enter fullscreen.
- Inspect black, gray, white and primary colors from normal seating distance.
- Move closer only to confirm a repeatable pixel or fixed mark.
What to watch for
- Clouding or edge light in normal dark scenes on LCD TVs.
- Dirty screen effect, vertical bands or blotches on gray fields.
- Persistent logos, status bars or interface shapes on OLED TVs.
- Dead or bright pixels visible from the distance you normally watch.
How to interpret results
Only visible up close
Consider whether the issue affects normal viewing before deciding it is significant.
Fixed OLED mark
Repeat on several colors and after normal varied content to separate temporary retention from burn-in.
Uneven gray field
Use the screen uniformity test and compare with real sports or panning scenes.
Frequently asked questions
Is a TV screen test safe for OLED?
Keep checks short, use moderate brightness and do not leave static test screens running longer than necessary.
Should I judge from a phone photo?
No. Camera exposure can exaggerate dark-screen issues, so judge with your eyes at normal settings first.