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Re: TV distorted colors
It needs to be demagnetize but the tv has it's own demagnetizer and it does it when you turn the set on,you need to unplug the set from the wall for about 15 minutes and then plug it back in and turn it on and the splahes should go away,if you have placed speakers on top of the set or in its sides remove them because they will cause this problem or if you have move the tv while it was on or the set was dropped.Let us know what you find.
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If you're good at soldering, Part #s STK392-570 may both be bad. If you tap on it and it works. Pull out the board with the 2 chips, (mark all the connectors) with the TV off. Replace these. You can find them on Ebay (at least to see what they look like). First go to the spot under the board where both of them are and resolder each pin avoiding bridges. Also resolder all the spots that you see the plugs you labeled at. With the TV on using one hand, with one hand in your pocket, carefully physically feel the metal heat sink the parts are connected to. If they are cold, you probably have bad fuses. They are usually beige. With the T.V. off and a meter, check these for continuity.
If you`re talking about colored spots in the screen, then you may have a degauss problem. It was frequent for those sets to have bad solder joint on the degaussing coil connector or thermistor next to it.If you`re handy with a soldering iron these connections would be near the a.c line input. good luck and don`t forget to unplug
Yes sure your tv can be fixed just call a tech and outline the problem.your tv has losted for a long time after repair it could last you a very long time congrats for keeping a tv for such a long time.