Choose a test
Pick a mode below to run it full-screen. Press Escape any time to come back here.
Dead & Stuck Pixel Check
Cycle through full-screen colors to spot dead, stuck, or hot pixels.
Stuck Pixel Fix
Drag a rapidly flashing square over a stuck pixel to try to repair it.
Banding & Uniformity Check
A black-to-white gradient reveals stepped shades and uneven patches.
Backlight Bleed Check
Full-screen black to inspect panel edges for light leakage.
Burn-in Check
A static high-contrast pattern to reveal ghosting/burn-in.