Dead Pixel vs Stuck Pixel vs Hot Pixel: How to Tell the Difference

There's a dot on your screen that doesn't belong. Before you panic or start pressing on it, it matters to know exactly what type of pixel defect you're dealing with — because the fix (or lack of one) depends entirely on which kind it is. Dead pixels, stuck pixels, and hot pixels look different, fail for different reasons, and have very different odds of being fixable.

The Definitive Comparison

The single most useful test: display a pure black screen. A dead pixel disappears entirely. A stuck pixel glows in its locked color. A hot pixel blazes white.

How to Identify Which Type You Have

Use the MyDeviceScan Dead Pixel Test in full-screen mode and cycle through all eight colors: red, green, blue, white, black, yellow, magenta, and cyan. Then ask:

• Dot visible on bright colors but invisible on black? → Dead pixel.
• Dot visible on black and most other colors, glowing in one fixed color? → Stuck pixel.
• Bright white dot visible on every color including black? → Hot pixel.
• Dot visible only on one or two specific color screens? → Stuck subpixel (partial stuck).

A partially stuck pixel is a subtype where only one or two subpixels are stuck. These show up as colored dots on some test screens but look normal on others. For example, a pixel with only the red subpixel stuck appears magenta on a blue screen and yellow on a green screen, but blends in on red.

Dead Pixels: What They Are and Why They Happen

A dead pixel is black because its transistor — the component that delivers power to the subpixel — has completely failed. Without power, all three subpixels (red, green, blue) stay permanently off. The pixel literally cannot produce any color or light.

Common causes:

• Manufacturing defect in the TFT (thin-film transistor) layer
• Physical damage — a drop, sharp impact, or pressure point that cracks a transistor
• Age-related degradation in older screens

Because the transistor is broken, software cannot fix a true dead pixel. Color cycling does nothing when there's no power reaching the pixel at all. Your options are a warranty replacement or learning to live with it.

Stuck Pixels: What They Are and Why They Happen

A stuck pixel glows in a fixed color because one or more subpixels are electrically stuck in the ON position — they're receiving power when they shouldn't be. The transistor is actually working; it's just locked in an incorrect state.

On LCD screens, this usually happens when liquid crystals in a subpixel stop responding to voltage changes and freeze in a particular orientation. Heat, manufacturing stress, and physical shock can all trigger this.

The color you see reveals which subpixels are stuck on:

• Red dot — red subpixel stuck on
• Green dot — green subpixel stuck on
• Blue dot — blue subpixel stuck on
• Cyan dot — green and blue subpixels stuck on
• Yellow dot — red and green subpixels stuck on
• Magenta dot — red and blue subpixels stuck on
• White dot — all three subpixels stuck on (hot pixel)

Because the transistor is functional, stuck pixels can often be freed. Running the Dead Pixel Test's Auto-Cycle mode at fast intervals for 30–60 minutes is the first thing to try. The rapid electrical switching can dislodge a stuck subpixel and restore it to normal behavior.

Hot Pixels: The Third Type Most People Forget

A hot pixel is white because all three subpixels are simultaneously stuck ON — the opposite problem from a dead pixel. The transistor is broken in the "always on" position rather than the "always off" position. Hot pixels are visible even on a completely black screen, which makes them especially distracting during movies or dark game scenes.

Hot pixels are sometimes confused with stuck pixels, but they behave differently on test screens. A white stuck pixel is very hard to spot on a white background — it blends in completely. A hot pixel stands out clearly on dark and medium-color backgrounds but disappears on white.

Because the transistor failure is permanent (just like dead pixels), hot pixels cannot be fixed with color cycling. They are covered under the same warranty policies as dead pixels.

LCD vs OLED: Does the Display Type Change the Rules?

On LCD screens, dead and stuck pixels almost always result from TFT transistor failure or liquid crystal freezing. The behavior described above applies directly.

On OLED screens, individual pixels emit their own light via organic compounds rather than relying on a backlight. Dead pixels on OLED look the same (black dot), but stuck pixels tend to be rarer. What OLED screens suffer from instead is burn-in — where static UI elements leave a ghostly image baked into the organic layer over time. Burn-in looks like a faint watermark or shadow, not a single colored dot, which is how you distinguish it from a stuck pixel.

The color cycling fix for stuck pixels works on OLED as well as LCD. The pressure technique should be avoided on OLED — the organic layers are thinner and more fragile than LCD glass.

When to File a Warranty Claim

If you've confirmed a dead or hot pixel that color cycling doesn't fix, document it carefully before contacting support:

1. Clean your screen with a microfiber cloth to rule out dust.
2. Run the Dead Pixel Test on all colors and photograph the defect on white and black backgrounds.
3. Enable the grid overlay to note the exact position (e.g., "row C, column 7").
4. Record your screen model, serial number, and purchase date.

Warranty coverage varies significantly. Premium brands offer zero dead pixel guarantees. Budget panels typically follow ISO 13406-2 Class II, which allows up to two type 1 defects (permanently lit/white) and up to five type 2 defects (dark/dead) before a replacement is owed. Knowing which class your panel falls into prevents a wasted support call.

Frequently Asked Questions