CRTs don’t last forever, and neither do the electronics that drive them. When you have a screen starting to go wonky, then you need a way to troubleshoot which is at fault. A great tool for that is a ...

Occasionally, we get to catch a glimpse of the hidden tests that ensure our technology-infused world runs smoothly: color bars on TV or blocks of “lorem ipsum” gibberish text. There’s a fascinating ...

Tyler Lacoma has spent more than 10 years testing tech and studying the latest web tool to help keep readers current. He's here for you when you need a how-to guide, explainer, review, or list of the ...

Learn how to tweak your desktop or laptop display using free test patterns or the built-in utility in Windows or Mac OS X. Matt Elliott is a senior editor at CNET with a focus on laptops and streaming ...

The picture on a TV set used to be the combined product of multiple analog systems, and since TVs had no internal diagnostics, the only way to know things were adjusted properly was to see for ...