Screen Test Results - Visual Issue Guide
Choose what you noticed during a screen test and get plain-language next-step guidance.
Quick answer
Screen test results are useful only after the symptom is repeated and classified. A fixed dark dot suggests a possible dead pixel; a bright colored dot suggests a stuck pixel; edge light, uneven fields, motion trails and touch gaps each need a different focused test.
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
- Clean the screen and repeat the same background or motion pattern.
- Choose the symptom that most closely matches what stayed visible.
- Run the linked focused test to confirm the same location or behavior.
- Record repeatable defects before a return, warranty or repair decision.
What to watch for
- A black dot that stays fixed across white and primary colors.
- A bright colored or white dot that remains visible on dark backgrounds.
- Fixed edge light, cloudy gray areas, retained shapes, motion trails or repeated touch gaps.
- Symptoms that also appear in the device menu, another source or normal content.
How to interpret results
Pixel symptom
Use the dead or stuck pixel test, then compare the same point on several colors before classifying it.
Panel lighting symptom
Use black and gray fields to separate backlight bleed, viewing-angle glow and broad uniformity variation.
Motion or touch symptom
Confirm refresh settings or repeat a full-screen touch grid before deciding the display hardware is at fault.
Frequently asked questions
Does a passed screen test certify the hardware?
No. These are visual inspection tools, not laboratory measurements or a manufacturer certification.
What if the problem appears in a screenshot?
A mark captured in a screenshot may come from the source image, app, graphics output or software. Compare another app, browser and source before blaming the physical panel.
When should I contact the seller or manufacturer?
Contact support when the symptom is repeatable, visible in normal use and documented while the return or warranty period is still active.