Monitor defect policies are frustrating because the visible problem and the warranty language are not always aligned. A pixel can be obvious to you and still fall under a threshold. Backlight bleed can bother you in games and still be treated differently from a bright pixel.
The useful move is to separate three things: what you see, how often it affects normal use, and what the return or warranty path asks you to prove.
Defects are not all handled the same way
Swipe table to view all columns.
| Issue | What to check first | Why policies differ |
|---|---|---|
| Bright pixel | Pixel test on solid colors | Some policies treat bright pixels more strictly |
| Dead or dark pixel | Pixel test at normal distance and close range | Thresholds can vary by panel class |
| Stuck pixel | Pixel test and possible stuck-pixel repair attempt | A stuck pixel may behave differently from a dead pixel |
| Backlight bleed | Fair dark-room test at normal brightness | Often judged by severity and normal-use impact |
| Uniformity or tint | Color and gray screens | Usually harder to fit into simple thresholds |
Dell's pixel guidelines are a useful example of why brand and product tier matter. Other manufacturers and retailers can use different terms, thresholds, and return processes.
Return window vs warranty
The return window is often the cleaner path for a new monitor that bothers you during normal use. You usually do not need to prove the same kind of defect threshold as a warranty claim, but retailer rules vary.
Warranty paths are usually more formal. They may ask for serial numbers, photos, diagnostics, pixel counts, or support steps. Do not assume a forum answer for one brand applies to your monitor.
How to document the issue
Good documentation is boring and useful:
- Monitor model and serial number.
- Purchase date and return-window deadline.
- Brightness setting and picture mode.
- Test used and date tested.
- Photos that show both test patterns and normal content.
- Notes on whether the issue appears at normal viewing distance.
Use document damage for warranty if you need a clean evidence checklist.
Which ScreenDetect test to use
Use the pixel test for dead, stuck, or bright pixels.
Use the backlight bleed test for edge glow, corner glow, and black-screen uniformity.
Use the screen color test for tint, color shift, or broader uniformity concerns.
Where to go next
- Checking pixels? Run the pixel test.
- Seeing glow or bleed? Read IPS glow vs backlight bleed.
- Collecting evidence? Use document damage for warranty.
- Still choosing panel type? Read monitor display technology explained.
Questions Monitor owners usually ask
How many dead pixels are allowed on a monitor?
It depends on the brand, model, panel class, and policy. Some policies treat bright pixels, dark pixels, and clusters differently, so check the exact manufacturer or retailer terms.
Is backlight bleed a warranty defect?
Sometimes, but not always. It depends on severity, normal-use visibility, the brand policy, and whether you are still inside a return window.
Should I use the return window or warranty?
For a new monitor that bothers you during normal use, the return window is often simpler. Warranty claims usually require more specific documentation and policy fit.
What should I document before contacting support?
Record the model, serial number, purchase date, brightness setting, test pattern, photos, and whether the issue appears in normal content at normal viewing distance.
Sources checked May 8, 2026
- Monitor Panel Types - RTINGS
RTINGS · Used for panel-type tradeoffs around IPS, VA, TN, contrast, viewing angles, and response behavior.
- Mini LED vs OLED Monitors - RTINGS
RTINGS · Used for OLED vs Mini LED tradeoffs around contrast, blooming, brightness, HDR, and desktop use.
- Monitor Image Retention Test - RTINGS
RTINGS · Used for image retention and burn-in context, static UI risk, and why OLED monitor risk depends on usage pattern.
- Dell Display Pixel Guidelines - Dell Support
Dell Support · Used for real-world pixel policy examples, bright pixel language, dark pixel thresholds, and why policies vary by brand and product tier.
- Samsung monitor image retention and burn-in troubleshooting - Samsung Support
Samsung Support · Used for official monitor image retention and burn-in troubleshooting context and mitigation framing.
- ASUS OLED Monitor Protection Mechanism and Warranty Service - ASUS Support
ASUS Support · Used for OLED monitor care feature context including screen saver, pixel cleaning, screen move, and logo brightness adjustment.
- Monitor Backlight Bleed Test - ScreenDetect
ScreenDetect · Used as the internal test destination for backlight bleed and glow evaluation.