Dead Pixel Testing for TVs — OLED, QLED, and LCD
Television screens use the same underlying pixel technology as computer monitors, but dead pixels on TVs are experienced differently — larger screens, longer viewing distances, and different usage contexts (movies, gaming, sports) mean a defect that would be obvious on a desk monitor might be invisible on a 65-inch TV across the room, or vice versa.
The tool above works on any TV with a browser — use the built-in browser on a smart TV, or connect a laptop to your TV via HDMI and run the test at full screen. Cycle through all six colors from your normal viewing position, then walk closer for a second pass.
OLED vs LCD vs QLED — How Dead Pixels Differ
LCD and QLED TVs — Most consumer TVs are LCD-based, including Samsung's QLED lineup (which uses LED backlighting and quantum dot enhancement on an LCD panel). Dead pixels on LCD TVs behave identically to those on LCD monitors: a failed transistor causes a permanently dark pixel. Stuck pixels appear as a fixed-color bright dot.
OLED TVs (LG, Sony, Philips) — OLED panels have self-emissive pixels: each pixel generates its own light, so there is no backlight. Dead pixels on OLED appear as tiny permanently dark spots, similar to LCD. However, OLED also has a unique failure mode called pixel burnout or burn-in, where individual pixels degrade from prolonged display of static high-brightness content. This is different from a dead pixel — burn-in creates a ghost image rather than a single dark dot. The test tool here detects both.
QD-OLED TVs (Samsung S95C, Sony A95L) — Quantum dot OLED panels combine OLED emissive pixels with quantum dot color enhancement. Dead pixel behavior is the same as standard OLED.
TV Dead Pixel Policies by Brand
TV manufacturers are generally less accommodating on dead pixel claims than monitor manufacturers, because TVs are viewed from further away and single pixels are less visible. Policies vary significantly:
- LG OLED — Zero dead pixel guarantee on OLED TVs (most LG OLED models); applies for the standard warranty period
- Samsung (QLED/Neo QLED) — ISO Class II standard for dead pixels; burn-in from user misuse is not covered
- Sony (BRAVIA) — ISO Class II standard; OLED models may have additional coverage
- Best Buy — 15-day standard return window; Geek Squad Protection extends coverage
If you're buying a new TV, inspect it within the retailer's return window using this test tool. For detailed brand-by-brand policies, see the dead pixel warranty guide.
Frequently Asked Questions
Do OLED TVs get dead pixels?
Yes. Despite their superior picture quality, OLED TVs can develop dead pixels through the same transistor failure mechanisms as LCD displays. Additionally, OLED pixels can undergo permanent brightness degradation (burn-in) from extended display of static content — this is technically distinct from a dead pixel but creates similar-looking dark spots in extreme cases. LG offers a zero dead pixel guarantee on most of its OLED TV lineup. Running this color test when your TV is new establishes a baseline for any future warranty claims.
How many dead pixels are acceptable on a TV?
Most TV manufacturers apply the ISO 13406-2 Class II standard: up to 2 always-dark pixels per display are considered within manufacturing tolerance. In practice, given that even a 55-inch 4K TV has over 8 million pixels, a single dead pixel at normal viewing distance (2–3 meters) is effectively invisible. Manufacturers are therefore less likely to replace a TV for a single dead pixel than they would a monitor. If a defect is visible from your normal viewing position, that's the strongest argument for a warranty claim.
Can a dead pixel on a TV be fixed?
For stuck pixels (a bright colored dot rather than a black dot), the dead pixel fix tool uses rapid color cycling to attempt to unstick the sub-pixel. This works on TV screens as well as monitors — run the fix tool from your TV's browser or via HDMI. True dead pixels (always black, transistor failure) cannot be repaired by software. Physical repair requires panel-level work that typically costs more than the TV's value outside the warranty period.
Is a dead pixel on a brand new TV covered by warranty?
Yes, though the threshold for replacement varies by brand. LG OLED TVs have a zero dead pixel guarantee. Samsung and Sony follow the ISO Class II standard. If you notice a dead or stuck pixel on a new TV within the retailer's return window, return it immediately — you don't need to argue about the manufacturer's threshold, you can simply use the standard return policy. After the return window closes, contact manufacturer support with photographs of the defect.