Screen Issues
screenissues.com
Free browser tool to test for dead pixels, bright spots, backlight bleed, and screen defects on monitors, laptops, and phones.
Description
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Installation
Not sure where to start — ask an assistant to walk you through:
Features
🎨 Multi-Mode Screen Tests
The tool offers four distinct testing modes: solid colors to expose dead pixels, gradients for color banding, patterns for line defects, and a motion blur test. This comprehensive suite allows users to systematically check for every common screen flaw. By cycling through pu
🔧 Hands-Free Auto-Cycle & Navigation
An auto-cycle feature automatically walks through all solid color tests, enabling users to step back and inspect their screen from a distance. Full keyboard navigation with arrow keys and spacebar allows quick manual control, while a brightness slider helps revea
📚 Visual Defect Library & Educational Content
The website pairs its testing tool with a rich library of visual examples and detailed articles explaining common screen defects. Users can compare their screen against labeled images of dead pixels, bright spots, and backlight bleed, transforming the to
Use cases
Test new monitor for dead pixels before warranty expires.
Troubleshoot unexplained bright spots on laptop screen.
Check smartphone for backlight bleed after a drop.
Evaluate gaming monitor's motion blur and response time.
Diagnose color tint or banding on a professional display.
FAQ
A dead pixel is a permanently dark dot that fails to light up. To find one, use the solid white test screen; a dead pixel will appear as a small black spot that doesn't change on other colors.
A dead pixel produces no light (dark dot). A bright spot glows where it should be dark, often visible on black test screens due to pressure or backlight issues.
No, this is a diagnostic tool only. Truly dead pixels require screen replacement. Stuck pixels might be helped by external pixel-fixing software.
Use the black screen test in a dark room and reduce brightness using the slider. Backlight bleed appears as light leaking from the screen's edges.
Policies vary, but many manufacturers allow 3-5. Check your warranty; clusters of defects may qualify for replacement.
Black or green lines often indicate faulty panel circuitry or a damaged ribbon cable. These lines, visible in pattern tests, usually need professional repair.
An orange tint can indicate color calibration issues, cable damage, or OLED degradation. Test with gray screens and check display settings first.
Image retention is temporary ghosting that fades. Burn-in is permanent uneven aging, common in OLEDs. Both show ghost images but burn-in is irreversible.
Yes, displaying test colors is safe and does not cause damage. It simply reveals existing defects without harming the display.
The tool works on any device with a web browser: laptops, desktop monitors, tablets, smartphones, and even some smart TVs.
Specs
| Type | Tool |
| Section | SQL |
| Pricing | free |
| Platform | Web only |
| Systems | web |
| Hosting | cloud |
| Install | saas |
| Site language | en |