Question about RCA 27R410T 27" TV

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RCA 27R410T my tv turns itself off and on

My TV will just turn itself off and on as it pleases!?!?!?! any idea what the problem could be?

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  • moirabean Oct 27, 2008

    I just don't touch the TV anymore... I only use the remote control and it no longer turns itself on/off... not the ideal solution... but it is the easiest fix... I would like to be able to use the TV to... so moving the controls to the outside of the TV sounds good...

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My one year old 24" RCA was having the same problem and also changing channels on its own. I decided to do some experimenting. (Warning: High voltages exist inside a TV even when it is unplugged. Messing around inside a TV may be very dangerous and stupid.)

I found that there was a 5 wire ribbon cable that connected the circuit board with the front control buttons to the main circuit board. I discovered that if I turned the TV on, then disconnected that ribbon cable from the main circuit board, the TV was stable, it would not do anything on its own. Obviously, I could not control it either with the ribbon cable disconnected.

Since there did not appear to be any ic chips on the button circuit board, but mainly some resistors, I theorized that the buttons simply caused a certain voltage signal to be returned to the main board. I further theorized that perhaps the voltage being sent to the board was varying causing the return voltage to also varying making the main board thing a control signal had been sent.

The five wires are labled on the small control circuit board. One was labeled "key". (or maybe "keys") I separated and cut that wire. The TV was then stable. It could be controlled by the remote control, but the buttons on the front were now not functional.

I connected some longer wires to the "key" wires and ran them outside to a switch. The TV now works fine with the remote control and is stable and will not do anything on its own. If for some reason I do need to use the manual buttons on the front, I can simply flip the switch on and the buttons will work. However if I leave the switch on the TV will again be unstable, turning itself on and off and changing channels.

That is how I "fixed" my RCA.

Posted on Oct 25, 2008

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