White Screen Test 4K for checking brightness uniformity, dead pixels, stuck pixels, and display consistency on OLED, LED, and LCD screens.

This 25-minute fullscreen monitor and TV diagnostic test helps reveal hidden panel defects and brightness irregularities.

Perfect for display calibration, monitor quality checks, and fast screen diagnostics in Ultra HD 4K.

🛠 Best Results:

• Watch in fullscreen mode
• Set video quality to 4K UHD
• Turn off automatic sleep settings
• Look for dark spots, uneven brightness, or pixel issues

📊 Technical Specs:

Color: White
Resolution: 3840x2160 UHD
Duration: 25 Minutes
FPS: 30
Audio: None

👉 Check the complete 11-color diagnostic playlist for full screen testing.