Question about Toshiba 57H82 57" Rear Projection Television
Hello. I have a Toshiba 57H82, I reciently replaced the two STK IC's hoping to fix a comvergence problem but I ended making it worst, After I placed the new IC's and conected everything back together, I had no pic or sound, I only hear the click then the red led turns on and remains on like if the tv is on but there is no pic or sound. I hope you can help me, what should I try now? do you have a copy of the service manual? I'm really looking forwad to hear back from you since my kids have no tv at all for now at least for the past week the had a distored pic to whatch but now not even that. By the way one thing that my be part of the problem is that I put a thick layer of heat sink compound on the new IC chips and I don't know if it's ok or did it suposed to been a very light layer, Does the back of the IC need to have contact with the cooling wall? well I'll wait for your advice before I try anything else. Thank you very much in advance for taking the time to help us, and also thank you for been so specific and descriptive on your coment because it makes it easier for us to understand the things we can try to do to solve our problems. Have a great day and again, Thank you.
Is it actually convergence that was out?? This particular model has a hyper module that can go bad causing video distortion but usually not just bending the blue, red, & green light like a convergence problem...
The Hyper board is a standup-up board on the left looking into the back of the TV, located behind the jack panel plug-ins. It has a metal cage around it and inside that are several 10mf/16v caps that go bad... Their board locations are:
The board is no longer available so techs simply rebuild those boards using mini radial camcorder caps.
If you're dead sure it's only convergence I'd say to check the amps over again and take an meter to check the yoke return resistors. One or more may be out of value feeding the amps.
Anything else let me know...
William Rayburn, CET
Posted on Jun 30, 2008
a 6ya Technician can help you resolve that issue over the phone in a minute or two.
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Posted on Jan 02, 2017
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