A test pattern can reveal issues, but the most important question is whether a problem is visible in the work, games, and video you actually use.
Prepare the setup
- Use the monitor’s native resolution and intended refresh rate.
- Set browser zoom to 100%.
- Clean the panel and let it warm up for about 20 minutes.
- Disable night light, dynamic contrast, and temporary color filters.
- Use moderate room light and a comfortable brightness.
Check pixels first
Open the dead pixel test and cycle through black, white, red, green, and blue. Inspect the full panel from a normal distance, then check suspicious points more closely.
Inspect uniformity and OLED wear
Use the uniformity test for patches, bands, and tint. OLED owners can use the OLED burn-in test briefly at moderate brightness.
Check tones and color
Run the gradient test, black level test, and white saturation test. Browser patterns are useful visual checks, but a colorimeter is required for objective color accuracy.
Confirm refresh rate and motion
Use the refresh rate test after closing heavy apps. Then compare monitor overdrive settings with the ghosting test. Look for the setting that reduces trails without adding bright halos.
Record what matters
Take notes about visible issues, settings, input ports, and cables. Check the maker’s pixel and return policy before deciding whether a panel needs service or replacement.