View Full Version : How can you tell if your monitor has dead pixels?

07-27-03, 01:31 PM
Can someone tell me what to look for?


07-27-03, 01:37 PM
Dead pixels only apply to LCD monitors and are easy to detect.

An image editing application works best in full screen mode. Display an image which is a solid light grey and look for individual dark pixels. If you use a very bright white, some dead pixels may not be noticed.

You will also want to check for STUCK pixels. These can be detected with a dark grey or black solid image. They mey be stuck in red, green, blue or in combinations of these colors.

07-28-03, 01:25 AM
Here's a site that has a free CRT and LCD tester.

LCD monitor test (http://www.monitorsdirect.com/toolkit/index.shtml)

Hope that helps:p

07-29-03, 04:05 AM
Dead pixels do not only apply to LCDs. I've got an old CRT monitor with one dead pixel where the shadow mask wasn't cut out properly.

A quick test for dead and stuck pixels is to first display a completely black screen and look for non-black pixels, then display a completely white screen and look for non-white pixels. Since yellow pixels might be hard to spot against a white background, you can find any by displaying a blue screen and looking for any black pixels.