Question about Mitsubishi WS-55807 TV
I had this problem and corrected it by resoldering all 36 pins of the 2 convergence IC's. Biggest problem was getting the circuit board out far enough to prop it up and get underneath and get at the solder connections, required unplugging a few cables, 3 screws holding it in. Works great now, I used to fix it by taking the back off and banging on the Heat Sinks which house the IC's, I could tell then that it reacted like cold solder joints. I decided after a field service guy charged us 95.00 for a service call and quoted 650.00 for a repair. Hope this helps someone.
Posted on Jan 13, 2008
I had this problem with our Mitsubishi as well. Seemed as if the convergence was "off", but that was not really it. Also, it would come and go..sort of "pop in" and "out". It made the picture appear to "bow in" and the sides of the screen were worse. I was fortunate enough to call the right repair place, and they knew exactly what it was. The technician said that when the tv's are made, they are "float soldered" and a machine puts the same amount of solder on all circuits, even though some need more. Over time the repeated heating/cooling wears it down and someting (sorry, don't know all details) either breaks or malfunctions. She (yes, SHE) came in and replaced the part and re-soldered all connections. Total came to just over $200... which was VERY much worth it... tv looks GREAT! She said it will happen to ALL these sorts of tv's after a certain amount of viewing. The parts are called "Convergence Amp IC's" and she used two... the part number is: STK392-110 My invoice says the parts were $38 each, and thre rest was the service call and time. Very reasonable I thought. Hope this helps.
Posted on Nov 22, 2007
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Posted on Jan 02, 2017
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