I have a problem that my TV will turn off intermittently after it's been on for about 30 minutes, sometimes it will work fine for up to two hours. I can turn it back on after about two minutes. The picture and sound quality are just fine while it's working. Is this repairable and if so, would this be an expensive repair?
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Re: TV turns off
[9V line missing from P/S; OCP circuits use IC641 (9V regulator) to turn off TV in case of a current overload]. Check for loose connections on R579 and R578.
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Have same problem. Not the proper fix though I found that taking the back off and heating it up with a heat gun for 30 seconds to 1 minute and tv works fine till you shut it off over night.Maybe someone can offer a solution with that in mind. Pretty strange
Tune the tv to a channel that is just blue screen. Then turn the tv off and unplug for at least 30 sec. Then plug the tv back in and turn it on. Then leave the tv on the blank screen channel go into the menu and do auto cable channel search. After the search is complete try all channels. This worked for me. My tv will not scan if the tv is on a channel that comes in. GOOD LUCK these tv's are junk .
I'll tell you but it's not easy to do it. The heat sink radiator for the audio amplifier IC is touching the circuit board. You have to remove it and to replace the sillicon. The radiator is situated on the back of the AV board. You got to remove all boards to get this one.