Monitor Test

The monitor test tool runs 27 full-screen test patterns covering dead pixels, backlight bleed, signal interference, focus, contrast, color gradients, saturation, and OLED burn-in detection. After clicking Start Test, all patterns render locally with no server upload. Use arrow keys or click to advance between patterns.

What Each Test Group Checks

• Steps 1–6 — Six solid-color backgrounds (red, green, blue, yellow, cyan, magenta) for dead pixel detection. Each color reveals a different type of stuck pixel.
• Step 7 — Pure white background to check brightness uniformity across the panel.
• Step 8 — Pure black background for backlight bleed. Must be viewed in a dark room to see light bleed around edges or corners.
• Steps 9–15 — Horizontal lines, vertical lines, crosshatch, dot matrix, and other interference patterns for analog signal quality.
• Step 16 — Box pattern for CRT and projector focus sharpness.
• Step 17 — Black-white alternating flash (about 2 times per second) to test CRT breathing effect.
• Steps 18–19 — White grid and colored crosshatch for geometric distortion and line width consistency.
• Steps 20–21 — 40 white gradient blocks and 40 black gradient blocks. A calibrated display can distinguish adjacent blocks; budget panels often cannot at the dark or bright extremes.
• Steps 22–25 — Black-to-white, black-to-red, black-to-green, black-to-blue gradients for color smoothness.
• Step 26 — Full rainbow gradient for color saturation and reproduction.
• Step 27 — Dark gray (#111111) background for OLED/AMOLED burn-in and image retention. View in a fully dark room.

Controls During Testing

• Click anywhere or press Space/Right arrow — next pattern
• Left arrow — previous pattern
• Esc — exit test
• Move the mouse within 96 px of the top or bottom edge — show progress and control panel (auto-hides when the cursor moves away)

Lighting Requirements per Test Group

Selecting a Subset of Tests

The dropdown lets you run all 27 steps or a subset — for example "Backlight bleed test" (steps 1–8), "Interference test" (steps 9–15), "Contrast test" (steps 20–21), or "OLED burn-in test" (step 27 only). The progress counter adjusts to the subset you selected.