Smart TV Screen Test Online
Check your living room 4K/8K TV for dead subpixels, Dirty Screen Effect (DSE), vertical banding, and permanent burn-in retention directly through your TV browser.
Launch TV Display Diagnostic Test
Compatible with LG webOS, Samsung Tizen, Sony Bravia Google TV, Fire TV, and Apple TV browser apps.
How to Inspect a Large TV Panel
Because large 55", 65", and 77" televisions pack over 8.3 million pixels, spotting tiny defects requires a systematic visual technique:
- Step 1 (Close Inspection): Stand approximately 2 to 3 feet from the screen while displaying pure White, Red, Green, and Blue to identify dead subpixels.
- Step 2 (Distance Viewing): Step back to your normal seating distance (6 to 10 feet) to check overall backlight uniformity, clouding, and corner vignetting.
- Step 3 (Dark Room Check): Turn off ambient room lights and display pure black to check for edge-lit bleed vs local dimming blooming.
- Step 4 (Gray Uniformity): Display 5% and 10% dark gray to inspect OLED panels for vertical banding or static logo burn-in.
TV Brand Warranty Policies
Related Display Tests & Diagnostics
Frequently Asked Questions
How do I run a dead pixel test on a Smart TV?
Open your Smart TV's built-in web browser (e.g. LG webOS browser, Samsung Tizen Internet, or Chrome on Android TV), navigate to deadpixeltests.com/tools/dead-pixel-test/, and click 'Start Dead Pixel Test'. Use your remote control arrow keys to cycle through test slides.
What is Dirty Screen Effect (DSE) on television panels?
Dirty Screen Effect (DSE) refers to visible cloudiness or dark patches across the panel when displaying panning camera shots (like football or hockey matches). It is best diagnosed using 25% to 50% medium-gray test slides.
How far should I stand when inspecting a 4K TV for dead pixels?
Stand 2 to 3 feet from the screen to detect tiny dead or stuck subpixels on high-density 4K/8K panels, then step back to your normal seating distance (6 to 10 feet) to check overall backlight uniformity and clouding.