I have a RCA HDTV the power comes on, then goes off, then it comes back on, and then off again. What part do I need to try to fix this. Model # D52W19B. Sometimes I can hit the power button and the TV will work fine but most of the time it seems to do this cycle on/off thing and then will not stay on.
This set seems to have an intermittant problem my friend. This is one of the hardest types of repairs there is to a TV tech. There could be a bad connection around the high voltage transformer also known as the sweep power supply, or maybe even in the main power supply. This is not a repair for the novice I'm afraid. Call in a pro to assist you in this repair and please, when you have it repaired, let us know what it took to repair this TV set. Good Luck