Apple Mac Diagnostic
MacBook Screen Test
Optimized diagnostic testing suite for MacBook Pro, MacBook Air, iMac, and Apple Studio Displays.
Diagnostic Sequence Preview
This test automatically cycles through calibrated solid color surfaces.
Pure BlackStep 1
Pure WhiteStep 2
Pure RedStep 3
Pure GreenStep 4
Pure BlueStep 5
Pure YellowStep 6
Pure CyanStep 7
Pure MagentaStep 8
Neutral Gray (50%)Step 9
Light Gray (82%)Step 10
Dark Gray (20%)Step 11
Monochrome GradientStep 12
Red to Green GradientStep 13
Blue to Green GradientStep 14
Red to Blue GradientStep 15
What to Look For
PixelCheck365 MacBook Screen Test is calibrated for Apple Retina, Liquid Retina, and Mini-LED XDR displays. It tests for subpixel failures, notch area border alignment, Mini-LED local dimming blooming, and True Tone color shifts.
- Microscopic dead subpixels on ultra-dense 220+ PPI Retina screens.
- Mini-LED local dimming haloing / blooming around high-contrast edges.
- Uniformity discrepancies around the top camera notch cut-out.
- Color temperature shifts across the 100% P3 wide color gamut.
Display Preparation Tips
- 1Disable True Tone and Night Shift in macOS System Settings > Displays.
- 2Clean the anti-reflective display coating with a dry microfiber cloth.
- 3Enter Safari / Chrome fullscreen mode (Control + Command + F).
Frequently Asked Questions
Does Apple replace MacBooks for dead pixels under warranty?
Apple follows strict quality tolerances. Under AppleCare+ and standard 1-year limited warranty, even a single dead subpixel in the central viewing area of a MacBook Pro often qualifies for display panel replacement.
Ready to Check Your Screen?
Launch full-screen diagnostics right now to verify pixel health, backlight uniformity, and color fidelity across your entire display.
Start Free Screen Test