Sounds like a magnet got placed near the TV. Confirm with a technician and, if so, ask him to demagnetize the picture tube.

Okay, I talked to a Technician. He told me because the set is 16 yrs. old, he does not want to touch it, but that if I really want him to he would be more than happy to charge me $175.00 to do so. Now, can someone tell ME how to de-magnatize the picture tube? Bye the way: no one went near the set with a magnet.......Any help is appreciated.

spoileddaddy

IF the problem is that the tube is magnetized, you will need to purchase, make, or borrow a demagnatizing coil.

They look like this.

http://www.twobits.com/parts/degauss+.jpg

Here is a link that might be useful: Click Here For Demagnetizing Information

Thanks jdbillp, I got a Degaussing Coil off of ebay (Radio Shack in my area don't got 'em). I used it and got rid of most of the Rainbow, but there is still discoloration around the edges of the screen. Still trying to work a round tool around a square screen. What's the secret?

spoileddaddy

Edited excerpt from the link I posted above.

To use this coil, turn on the unit (your TV) to be degaussed and display a picture.

Hold the coil right in front of the screen, then turn it on.

Slowly withdraw the coil from the screen while moving it around to cover the entire area of the screen.

When you can't see the rainbow effect any more (about 3 to 4 feet away), turn the coil sideways and cut the power.