How to Test for Dead Pixels
Follow our simple 4-step guide to thoroughly inspect and test any display for dead pixels, stuck subpixels, and screen flaws.
Diagnostic Sequence Preview
This test automatically cycles through calibrated solid color surfaces.
What to Look For
Testing for dead pixels involves 4 essential steps: 1. Cleaning the screen surface, 2. Maximizing brightness and disabling color filters, 3. Entering full-screen solid color mode, and 4. Methodically scanning screen quadrants for unlit or frozen subpixels.
- Step 1 (White Screen): Scan for black specks indicating dead subpixels.
- Step 2 (Black Screen): Scan for bright colored pinpoints indicating stuck subpixels.
- Step 3 (RGB Slides): Verify red, green, and blue subpixel channels illuminate uniformly.
- Step 4 (Gray Slides): Check for backlight cloudiness and Dirty Screen Effect.
Display Preparation Tips
- 1Clean your screen with a soft microfiber cloth before starting.
- 2Turn off Night Light, Night Shift, and True Tone.
- 3Sit 18–24 inches away and scan quadrant by quadrant.
Frequently Asked Questions
When should I test for dead pixels?
Always test immediately after unboxing a new phone, laptop, monitor, or TV while you are still within the retailer's 14-30 day hassle-free return or exchange window.
Ready to Check Your Screen?
Launch full-screen diagnostics right now to verify pixel health, backlight uniformity, and color fidelity across your entire display.
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