Question about Sony FD Trinitron WEGA KV-36FS120 36" TV

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Problem with picture

I have a 2 yr old sony and today when i turned it on the color on all four corners looks like a rainbow. Does any one know what might cause this?

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Re: Problem with picture

Did you hear the familar HUMMM when you turned on the TV? This hum is the internal degauser and if it's not comming on then there is your problem. On most TV brands you can use an external degauser ring o take care of the issue until repaired but, DO NOT do this on a Sony as it will actully damage the CRT.

Posted on Feb 02, 2007

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Check its degaussin posistor. Replace it. This component can be located at the main power regulator section.
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1 Answer

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The tube needs to be degausse you had maybe placed speakers beside the tv causing it to magnetize have a tech look at it to remedy the problem.good luck.

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you need to borrow or rent from a repair shop a degaussing coil. Its a big coil of wire that plugs in and has a switch on it. How you use it? With the coil plugged in,but not switched on ,hold the coil in front center , about two inches fron the picture tube. Now switch on the coil and slowly rotate the coil in a circle all the way around the picture tube and at the same time pulling slowy away fron the front of the picture tube. Keep doing the circular motion till you reach about three feet from the front of the tube, turn the coil sideways fron the tube and quickly shut off the coil. This is done with the tv set on. The set should look clear now ,with no color blotches on the corners or the rest of the picture. If it dosent then the pictre tube is bad. If it does look good, shut off the tv set for a hour or so , turn back on the tv set, Is the colors back on the screen. Yes , then ther thermistor or degaussing circuit needs to be serviced, and this is something you will need to call in a tech to service for you cause theres extremly high voltage inside these sets and not for a handi-person to tinker with. But if its good then your all set. Good Luck

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