Originally Posted by LiquidSnake
If the only problem is discoloration, then yes that's fixable. The screen needs to be degaussed. Multiple off-on states should do this, but if it remains, a manual degaussing with a degauss wand will fix the problem.
(Sorry...I haven't checked this site for a couple weeks.)
Yes, this works! I have used a hand-held "bulk tape eraser" many times on various CRT's over the years. It takes a little "courage," but gets rid of the most stubborn colored blotches.
Here's the procedure: Turn the TV on. Place the bulk tape eraser an inch or two from the screen. Switch it on. (Expect to see a "rainbow" pattern. DON'T WORRY...things will be OK.) Move the bulk eraser slowly around the affected area of the screen, in a slow circular motion. Then, slowly...slowly...pull it away from the screen until it's at least 10 feet away. Then switch it off.
The problem should be gone. If not, repeat the above steps. You'll get it.
Now, the hard part may be finding the hand-held bulk eraser. They used to be very common, but of course they're rare now. I have a Videoraser Model VX-1401. Here's a link to an e-Bay auction:
Here's an e-Bay listing for a Radio Shack model, again an e-bay auction: