Question about RCA 27V520T 27" TV

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Please help I have looked at several post but cant seem to find the problem. I have a RCA 27 inch tv. It keeps coming on and off randomly and sometimes keeps changing the channels on its own. I dont know why it is doing this. Maybe you can tell me what you think is wrong and maybe what i can do to fix or bypass the problem. Thank you

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Try, to look for a cold solder joint.

Posted on Aug 27, 2008

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I don't like to post anything without some kind sort of solution but this one's been tough.

For a list of what seems to be a chronic issue with RCA. I included a list.
http://www.netnoise.com/boycott_rca/rcabook2007-8.html


I did come across these two posts, hope it helps.

"well people don't be afraid all you have to do is to change a Horizontal out put transistor D3402 and that all is common problem I am a tv technician and already know that this kind of problem is normal good luck"

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Anyway... First port of call is always open up and look for bulging caps on the psu:

http://en.wikipedia.org/wiki/Capacitor_plague

Bulging caps on the power supply board causes all sorts of symptoms on the TV.

Proceed at your own risk, the tube can hold 20,000v

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Hello,

I am by no means an expert but i have the same type of TV and have a similiar problem, first I thought it might be a heat-induced effect so I vacuumed the interior but no joy--then I carefully inspected the main board and found two components that looked melted. So I would suggest you vaccum the interior and then inspect. But be careful as I found one capacitor on the board that still had a charge after 3 days of the set being turned off, you might want to verify things with a multimeter before poking around.

--Hank Rausch

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