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check all caps in the power supply especially the 10mf 22vols cap.the caps are not filtering the voltage properly when the the current i off the caps drain the voltage and does not keep charging.until when current is applied to the set.good luck.
Try this one: 1. Unplug your power cord from the box (NOT THE WALL!) 2. Wait 3-5 min... No more than 5 MIN (very important) 3. Hold down the power and select button at the same time and don’t let go. 4. Have someone plug the power back in… and keep holding the power and select button. 5.Don’t let go until it gets to 0 (it's about 5 min) 6. Once it gets to 0 then it will stop counting down, that when you let go!! 7. Don’t touch anything, 8. The screen will reset and it will go blank. nad that's it
Sounds as though you have a video problem. It may be the convergence chips. The TV is shutting down do to a default in the circuit ( the set knows there is an error of somekind so it shuts down to protect itself). This is a problem that needs a pro trouble shooter since it could be in about any board. Sorry I couldn't help more
I am having the same problem with my RCA 32V550T. This has been the worst purchase I have ever made - it was an expensive TV at the time that I got it and it only worked for a few months. It may or may not come on. It may or may not have sound. It rarely works but If per chance it does come on it will work maybe from 15 mins to 2 hrs. depending on it's mood - yes I think it is possessed. It turns on and off at will. I keep it unplugged most of the time because I worry it may be a fire hazard. I have had it repaired but the problem persists. It's a useless but expensive heap of junk taking up space in my living room. I had a great RCA VCR that I bought many years ago but contemporary RCA products are not the quality they used to be - be smart and stay away from them.