Question about RCA 27F634T TV

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Turns on and off by itself repeatedly

My RCA 27F634T TV will turn it's self on and off. We will start with it being unplugged. Say I plug in the set, turn it on. It might stay on for an hour or maybe only 15 minutes, the time varies dramatically. The tv also turns it’s self off. I have both the wake up and sleep timers turned off. There are times when the tv will stay off or on for maybe up to an hour, and other times it will constantly turn it’s self on and off. We have another rca tv that uses the same program on the remote. If you put both tv’s side by side, the problem still occurs. This I feel should eliminate the thought of outside signals. We have also put the tv in the basement and it still occurs. Any help will be appreciated Oh yeah, anyone having a wiring diagram would be nice. thanx a bunch

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Re: turns on and off by itself repeatedly

Did i find the problem? Well yes, sort of. Knowing a little about electronics, my troubleshooting led me to beleive it was the sensor that receives the signal. The other thing i thought it might be was the plastic that pushes on the buttons. I eleminated this by removing the parts. As for the sensor, i couldn't find a part number and the best i came up with was to purchase a schematic for $40.00 I figured it was a five dollar part. With this all in mind, and not knowing for 100% sure it was the part, I called around and found a place that gave free estimates. I figured if i was correct, the fix would be $100.00. Sadly i was correct on all counts. But what could i do, I couldn't find the part number and it wasn't on the part. The repair guy said this was very common on the RCA"s If you are still interested, i could see if i could find the receipt, and see if the part number is on it. It is an easy fix if you are at all handy with a solder iron. Give me a yell if you want me to look jeff

Posted on Jun 14, 2008

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Re: turns on and off by itself repeatedly

Hi..i have the exact same problem. Did you find a solution for this? Please let me know.


Posted on Jun 14, 2008

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Sorry to have such good news, but this is one of the ways a picture tube can go bad, and it happens quite often.

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