Test Hub

Screen Test Tools for Dead and Stuck Pixels, Bleed, and Burn-In

Run browser-based tests to check dead/stuck pixels, backlight bleed, and OLED burn-in in minutes. Capture evidence and choose the next step: repair, monitoring, exchange, or warranty claim.

Run Quick BaselineExplore All Tests
  • Browser-native workflows
  • No account required
  • Designed for warranty documentation

Tool Directory

Choose Your Diagnostic Workflow

Each tool is optimized for a specific defect class and returns structured output you can use for support and documentation.

Diagnostic2 min

Pixel Test

Detect dead, stuck, or hot pixels with comprehensive color patterns

Best for
Dead/stuck pixel verification
Output
Defect position log
Launch diagnostic
Diagnostic1 min

Backlight Bleed Test

Identify light leakage and IPS glow on dark backgrounds

Best for
Edge glow and bleed review
Output
Bleed severity notes
Launch diagnostic
Diagnostic2 min

OLED Burn-In Test

Test your OLED screen for burn-in and image retention

Best for
OLED retention detection
Output
Retention classification
Launch diagnostic

Evidence Layer

Why Testing Matters

Treat diagnostics as decision infrastructure, not one-off checks.

Return window actionability

14-30 days

Most replacement policies are decided in this interval, making early diagnostics high leverage.

Decision impact

Stuck pixel recovery probability

60-80%

Recently formed stuck pixels have materially higher correction potential when identified early.

Decision impact

Complete baseline overhead

5 min

A short baseline prevents ambiguity later in support, resale, and quality reviews.

Decision impact

Timing Strategy

When to Run Diagnostics

Run diagnostics at lifecycle checkpoints where fast, defensible decisions matter most.

  1. Post-purchase (day 1-3)

    01

    Establish reference condition

    Why

    Early evidence improves replacement outcomes if faults are found.

    Action

    Run full sequence and archive screenshots.

    Record

    Save date, device model, and test conditions.

  2. Pre-warranty close

    02

    Revalidate display integrity

    Why

    Late-stage defects are often disputed without reproducible test context.

    Action

    Run issue-matched tests and compare against baseline.

    Record

    Capture side-by-side current vs prior findings.

  3. Before resale/trade-in

    03

    Produce buyer-facing proof

    Why

    Condition clarity reduces negotiation friction and post-sale claims.

    Action

    Run symptom-relevant tests and summarize outcomes.

    Record

    Attach screenshots with concise findings summary.

  4. Scheduled maintenance

    04

    Track panel drift over time

    Why

    Gradual degradation is easier to manage when measured periodically.

    Action

    Run quick check monthly and full cycle quarterly.

    Record

    Keep a rolling diagnostic log.

Operational Checklist

Best Practices

Use a consistent procedure for cleaner diagnostics and better repeatability.

Before Testing

Checklist

  • Prepare the panel surface

    Remove dust and residue to avoid false positives in static color passes.

  • Normalize display controls

    Set brightness and disable auto-adjustments before starting.

  • Stabilize environment

    Use dark conditions for bleed checks and controlled ambient light for pixel checks.

During Testing

Checklist

  • Inspect at controlled pace

    Hold each view long enough to inspect corners, edges, and center zones.

  • Classify defects correctly

    Dead pixels remain dark; stuck pixels show persistent subpixel color.

  • Maintain viewing consistency

    Keep angle and distance steady to reduce panel-angle misreads.

After Testing

Checklist

  • Capture reproducible evidence

    Save screenshots with timestamp and active test mode for traceability.

  • Route to mitigation paths

    If issues are detected, run targeted follow-up or repair workflows.

  • Escalate within support windows

    Share complete evidence packets with seller/manufacturer promptly.

Scenario Navigator

Recommended Paths

Choose your context, then execute the primary workflow. Keep the secondary route as fallback.

For new monitor, laptop, or phone purchases

New Device Validation

Build an immediate diagnostic baseline before return windows tighten.

Estimated time

5 minutes total

Expected outcome

Exchange-ready condition report with defect classification.

Primary route

Run sequence: Pixel -> Backlight Bleed -> OLED Burn-In.

Outcome: fastest validated classification.

Start baseline now

Fallback route

Choose tests manually by panel type and symptom.

Outcome: broader coverage with manual control.

Open directory and customize

FAQ

Frequently Asked Questions

Detailed answers for workflow selection, evidence quality, and diagnostic reliability.