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Re: 65 in.JVC bad picture
You may have a convergence problem that means, there may be convergence ic's bad or related components. If you know something about tv's, try checking things out. You can get a repair manual from websites to download. If you do not normally fix tv's the best thing is to call a tv repair technician.
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This set has a convergence problem. You should only need to replace the IC. Part is STK393-110. It sits on the middle board behind the large heatsink. Use a heat transfer compound to ensure repair lasts. If you have no experience soldering (or unsoldering) please use a professional for the work. The traces are fragile and I have fixed many mistakes local DIYers have committed. Goodluck.
Your convergence has failed and needs to be repaired. Once quick test is to goto your convergence menu and see if you can adjust red and blue. If not its has failed and needs to be fixed. You can call in a repair shop or you can get the parts and instructions from www.TvRepairKits.comand do the repair yourself. Its a fairly easy DIY fix. Here is an example video
You-Tube video "9oI1Nzq7CR8" placeholder (do not delete)
thats how my stared than got worse i call for service and got fix after
4 moths had the same problem and i called the same guy again at firs he
told me that the convergence was bad and replaced them i think there
are three pieces but than the second time he took the box inside the
tv he checked all the circuits and the board and he found out the
something else was getting real hot and was causing that the
convergence to bad now he fixed hope i got no more problems
i have found when samsangs convergence are out of range perfect focus will fail. if the are out of range a technician will try to adjust the set in service mode. store these values and then this will be the base for the perfect focus. If the set has a bad convergence cuircit then they have to be replaced.