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LG 50 PS 3000 tv will not turn on. Flashes a picture then turns itself off

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Since your TV comes on and shuts off, the possiblity of the main power developing a fault on switch on to shut off as the error amp is asking it to do so.. Please check for any failure of capacitors in the HT section. use a multimeter and test voltage on switch on. make a note and test after it switches off. you will slowly arrive at the point of trouble. look for dry solder joints. use a good iron to carefully solder all joints suspected to look mushy. check the connectors of the HT drives to the panel. there could be fault in the connection resulting in slow build up and causing the error amp to react to shut off. Hope my advice helps. Good day

Posted on Jul 12, 2010

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