Understand Dead Pixels and Screens
Find here all our tutorials, tips and tricks and news articles about dead pixels, screens and how to fix them. Here's everything you need to know about dead pixels, how to test your screen and how to fix dead or stuck pixels.
Dead pixel on a laptop screen: free test and fix
How to test a laptop screen for dead pixels for free, tell the panel apart from the graphics chip and the hinge cable, try the fixes that work, and judge a warranty claim before the window closes.
How do you test an LCD screen?
The full panel check in order: dead pixels, backlight bleed, contrast, uniformity, banding and resolution. What each test reveals and what a failure actually means.
Stuck pixels: what causes them and how do you fix them?
What makes a sub-pixel jam on, how to confirm it in a minute, and the fixes that genuinely work — with an honest account of the odds.
What causes dead pixels?
Manufacturing defects, physical pressure, heat, liquid and age. What actually kills a pixel, which causes you can control, and which ones spread.
Dead pixel on your screen: what should you do?
Confirm it, identify it, try the one fix that works, then decide between a warranty claim and living with it. The whole decision in order, for any screen.
How do LCD screens work?
Backlight, polarisers, liquid crystal and colour filters. How an LCD builds an image layer by layer, and why that structure is exactly what fails in a dead or stuck pixel.
Dead pixel on an OLED screen: how do you test and fix it?
OLED fails differently from LCD: dark pixels rather than bright ones, and burn-in instead of stuck pixels. Why the usual fixes do not transfer, and what actually works.
How do you fix a stuck pixel?
The flashing method, the pressure method and the ones to avoid. What actually revives a stuck pixel, how long to give it, and when to stop and claim warranty instead.
Dead pixel on iPhone: test your iPhone and fix its bad pixels
How to test an iPhone screen properly, why True Tone and OLED change the method, and what Apple will actually do about a dead pixel.
Dead pixel on a smartphone screen: how do you test and fix it?
Phone screens hide pixel faults behind very high pixel density. How to test one properly, what OLED changes, and what to do before the return window closes.
Dead pixel on a monitor: how do you test and fix it?
How to test an external monitor for dead pixels, rule out the cable and the graphics driver first, attempt a fix, and document a warranty claim properly.
Dead pixel or stuck pixel: what is the difference?
A stuck pixel shows a colour and can often be revived; a dead pixel shows nothing and cannot. How to tell which one you have in about a minute, and what to do about each.
How to clean your computer screen safely?
A dry microfibre cloth, no pressure, and never household glass cleaner. What to use, what destroys a screen coating, and how to tell dirt from a dead pixel.
What is a stuck pixel?
A stuck pixel is jammed showing one colour because a sub-pixel will not switch off. Unlike a dead pixel it still has power — which is why it can often be brought back.
How to test my screen for dead pixels?
A dead pixel test fills your screen with solid colours so a failed pixel has nowhere to hide. How to prepare, what to run, and how to read the result in about two minutes.
What is a dead pixel?
A dead pixel is a point on your screen that has stopped emitting light entirely. What it is, why it happens, how to confirm it in a minute, and what can realistically be done about it.
