ToolsFree browser-based screen test

TV Screen Test

An eight-step television workflow covering pixels, black level, backlight, blooming, burn-in, HDR, color, and motion.

Device guides
Test workspace

Use every mode and inspect the entire panel, including corners and edges.

Completed 0 of 8 checks
  1. Step 1 of 8

    Dead Pixel Test

    Cycle full-screen colors and custom fields to find stuck, dead, bright, or dim pixels across the panel.

    Start this check
  2. Step 2 of 8

    Backlight Bleed Test

    Display black and low-gray fields in a dark room to distinguish edge bleed, clouding, IPS glow, and uneven backlighting.

    Start this check
  3. Step 3 of 8

    Black Level Test

    Compare pure black, near-black steps, and embedded dark patterns to inspect black depth, glow, and crushed detail.

    Start this check
  4. Step 4 of 8

    Blooming Test

    Move bright objects and subtitle patterns over black to examine local-dimming halos and zone transitions.

    Start this check
  5. Step 5 of 8

    Burn-In Test

    Run solid colors, moving bars, checkerboards, and gradient sweeps to reveal image retention or uneven pixel aging.

    Start this check
  6. Step 6 of 8

    HDR Test

    Check browser HDR and wide-gamut signals, then inspect highlight roll-off, shadow detail, and high-contrast tone mapping.

    Start this check
  7. Step 7 of 8

    Color Accuracy Test

    Compare reference patches, neutral gray ramps, and saturation steps for obvious hue, balance, and clipping errors.

    Start this check
  8. Step 8 of 8

    Refresh Rate Test

    Measure real-time frame cadence and watch synchronized motion with frame-time history and long-frame counts.

    Start this check
How to use this test

A repeatable process gives more useful results than a quick glance.

01

Prepare the display

Clean the screen, use the device's native resolution, and let brightness stabilize before running TV Screen Test.

02

Scan methodically

Run every available mode. Move your eyes across the center, edges, and corners instead of staring at one point.

03

Confirm the result

Repeat suspicious patterns at two brightness levels and compare with another display when possible.

What the result can tell you

TV Screen Test

This guided sequence covers the most common display faults for this device class and keeps the checks in a useful inspection order.

Testing notes

Disable night-light, color filters, and automatic brightness while comparing colors or tones.

Use a dim room for dark patterns and normal ambient light for color and brightness checks.

Stop flashing or high-contrast motion tests immediately if they cause discomfort.

Related tests

Panel tests

Dead Pixel Test

Cycle full-screen colors and custom fields to find stuck, dead, bright, or dim pixels across the panel.

Panel tests

Backlight Bleed Test

Display black and low-gray fields in a dark room to distinguish edge bleed, clouding, IPS glow, and uneven backlighting.

Panel tests

Black Level Test

Compare pure black, near-black steps, and embedded dark patterns to inspect black depth, glow, and crushed detail.

Panel tests

Blooming Test

Move bright objects and subtitle patterns over black to examine local-dimming halos and zone transitions.

Frequently asked questions

Can this test prove that my screen is defective?+

It can reveal visible symptoms and help you reproduce them, but warranty decisions should be based on the manufacturer's policy and, when needed, instrument measurements.

Are any test results uploaded?+

No. Patterns, calculations, touch trails, and browser measurements run locally in this tab.

Why does the result change with brightness or viewing angle?+

Panel technology, local dimming, tone mapping, viewing angle, ambient light, and automatic display controls can all change what you see.