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JVC Model av 48p777 I adjust contrast knobs inside tv and now its still blinking and it shuts off like it gets too hot

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Hi


Firstly, check for a blown fuse or circuit breaker or a power outage. There is a fuse on the inside back panel that is suspect which is located near the power entry to the back of TV. Some versions were socketed others soldered. If you have already tried hard reset (unplugging and plugging it back after 5-24hrs) and still the issue is not resolved then this is more likely a power supply failure. Most causes of TV failure are due to bad capacitors on either a system board or the power supply. In this case, it sounds like the power supply. You can test the capacitors with a capacitor tester to determine faulty capacitor. You can also test other components like power supply current with voltmeter or multi-tester. It can also be due to the protection circuit that is detecting excessive power or current drain by one of the sections of the TV. Could be the high voltage; could be the deflection circuits; could be the audio amplifier; could be the main power supply itself. All this is only recommended if you have electrical expertise and know how to solder/re-solder the components.


Please do accept the solution if the issue is resolved or else revert for further assistance.


Thanks
Rylee

Posted on Sep 27, 2009

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