The circuit board on the front of the TV seems to have bad contacts,I have to mess with it to get them to work by hand or with the remote then it will only last a short time before they stop working again. loose connection? or contacts bad? or both....what is this part called and the number, where do I order it from? Is this something I can replace myself, very hands on with tech stuff. Thanks for your help
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Re: Rca P46924 front buttons on TV won't work
This is probably a proximity unit. You can take it apart and clean it with electronics cleaner (radio shack) and a soft cloth on both the pc board and the rubber buttons. If this doesn't work, you may be able to find a parts list for your unit on the web....If you're in North America, this unit is obsolete as of February.
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when the cord was pulled out it caused circuit board damage hopefully just the cord needs to be resoldered to the board.. take take off the back and look. if the board is broken then the board needs replaced. and that is the buyers problem since he did the damage..
the button cluster in the front may have a bad tack switch(button) or the buttons may have loose connections. you can take the speaker grill off and look yourself...watch for wires..unplug your tv first:) also if you use spray cleaner that may have seeped into the button cluster too...you may be able to get the cluster as a whole from a local tv repair shop and put it in yourself..save labor charges:)
More than likely it has bad solder connections on the circuit board. You could try tapping lightly on power supply/deflection boards to see if it makes contact. Usually I find bad solder on those right under where the power cord plugs in, on the bottom of the board. If you have a soldering iron and solder you could save a few hundred dollars in repair costs, but use caution and make sure all power to set is disconnected. Maybe mark each plug as you disconnect them. Hope this helps. Good luck, Russmann.
I guess you mean by remote and the front panel button? I had that problem and I took off the top rear panel and moved my front control panel circuit board to the left just a little. This is looking from the back side. I guess the buttons were no longer lining up and the infrared sensor may have been blocked preventing the remote from controlling the tv. I also unpluged and then reinstalled the control panel wiring harness. It was blue and is right behind the middle picture tube. I hope this may help someone if not you.
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.
Check connections at the HV distribution box (where the leads from the flyback connect to) and make sure all of these are in solid first. It sounds like a device is burnt open, since the over- current protection is not activated. This would allow the TV to still turn on, but with no picture. Of course you had installed a fuse too large, so that could explain that too- don't do this, you might have made the problem worse by burning out more components. Could be a bad horizontal deflection transistor or flyback transformer. Transistor p/n 2SC5148, flyback 239111 for this model, RCA P46924. You can find them on ebay for cheap.
This TV actually has bad buttons I've seen many of them, usually those switches never go bad but on this tv they do. The easiest thing to do is remove them, and use the remote, who uses those buttons anyway. You can slide out the circuit board and you will see the small switches in front if you can solder just remove remove them if not you can cut them out just be careful none of the pins remaining in the board are touching one another.