How to use this test
- Clean screen surface gently.
- Click 'Enter Fullscreen Test'.
- Click anywhere or press Spacebar / Arrow Keys to cycle colors.
- Inspect display carefully for anomalous dark or colored dots.
- Press ESC to exit fullscreen.
How to understand your result
Looks good: No anomalous dark or colored dots were observed across all color fields.
Issue observed: A permanent dark or colored dot was identified on the display panel.
Troubleshooting: what to try next
- Ensure the mark is not surface dust by gently wiping the panel.
- Stuck colored pixels can sometimes be revived using rapid color flashing, whereas dead black pixels indicate defective transistors.
What this test cannot tell you
Visual inspection relies on user observation; web software cannot probe physical panel circuitry.
Frequently Asked Questions
A dead pixel remains black because sub-pixels receive no power. A stuck pixel remains locked on red, green, or blue.
EP
Tested & Reviewed by [REAL AUTHOR NAME - OWNER TO COMPLETE]
Last Reviewed: 2026-10-17 • Test Method: Fullscreen solid color cycling with keyboard and touch navigation • How We Test