When many of us purchase a brand-new flat-screen TV, we set it up and forget about it. As time goes on, you might notice a smudge here and a fingerprint there, all of which can interfere with your ...

A TV picture tube (CRT ... Also known as a "flat screen," "flat face CRT" or "flat square tube" (FST), the flat CRT provided less distortion at the edges and was the preferred design.