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A lot of these sets have a software upgrade that can take care of intermittent power on issues, check with the LG website and see if there is noe available for your model set, I have seen this solve these problems numerous times
sounds like you need a firmware upgrade one of the reported fixs on this model for your problem is to do a firmware upgrade. I don't think LG will send the file to a consumer but you need to call them anyway it goes if ti's not firmware then it's most likey the digital cba assy. LG 800-253-0000 Good Luck
The picture won't come on my sanyo hdtv lcd. model number:dp37647. The power went off and when everything came on, the tv no longer showed the picture. The power button still works though! It show the tv to be recieving power, but no corresponding action from the screen or sound! HELP!