Question about RCA 32V420T 32" TV
Can you help me determine what to do? email@example.com
The problem is most DEFFINATELY the control board behind the user buttons.
You have 3 options to fix this...
1. Replace the new board completely (no garuntee your getting a "new" part).
2. Replace the tack switches (requires soldering and patients [alot of them]).
3. Remove the board and snip the one wire marked "Key". I didn't snip it so much as correctly pulled the wire out of the plug itself. By removing that one wire from the board you disable just the buttons. You still have complete use of the remote. Who the heck walks over to the TV these days anyway!?!?
Posted on Oct 23, 2008
Thanks to Jean JG my RCA 32v420t is now working again. I was having the exact same problem, found the source but did'nt know which wire to cut. So I followed his advice and snipped the wire marked "key". My TV now works like a charm, with the remote of course. Thanks again. I hope somebody else will find this as useful as I did and fixes their "RCA" or should I say P.O.S? Needless to say RCA has lost yet another customer forever
Posted on Jan 19, 2009
My tv is also a RCA 32V420T. It started turning its self off and on and searching the channels on it's own. This madness went on for a few days, tried reset by unplugging overnight and cleaning, then banging on the front panel. It did stop the insanity. Then, about 6 months later, it started doing it again! So, after trying everthing again with no luck, we took drastic measures and cut the Key wire as suggested and happy to say -the TV instantly was under control. The second wire down was clearly marked Key on the circuit board that the switches are on, so there was not much chance of cutting the wrong wire. Was an easy fix for a frustrating problem, do not by afraid to try it yourself. Cannot use the buttons on the TV manually, but the remote works as it always has. Thanks to all with great the advice!
Posted on Feb 24, 2010
Hello everyone, I have the same problem with a RCA 32V432T and it first was turning itself on and off and scanning for channels. Now it turns on shows CATV 1 and goes off , then turns on and off over and over. I removed the front control panel and it looks ok no loose solder joints or " leaking " ....looks like the day it was made. There really isn't much to this panel a few resistors etc but not much at all. I am about to cut the wire marked KEY but before I do , does anyone know of anything I can do to this panel which will fix it? ...man I am beginning to really hate this RCA TV , it's only a couple of years old and its already going south !
Posted on Sep 17, 2009
I encountered the same problem with my RCA 32'' TV Manufactured in 2008 in Mexico. After trying everything I found on the Web, from a hard reset to banging on the TV Cabinet, I decided to investigate the problem myself. I opened up my television set and looked around for any loose or burnt parts. I did not see anything... I plugged the tv back in and it started turning on and off again. I traced the cable from the front panel to the main board and while keeping the TV plugged in I unplugged the connection from the main board. Finally the TV stop turning on and off. Aha!. Plugged the connection back to the main board and it started turning on and off again. Finally I had nailed the problem. I took that little front panel out which is very easy to do. Took it to my place of work and analyzed it under a 5x microscope. It seems to me that RCA did not do a good job on that section of the TV. It looked wet as though something was draining from the wires plugged into that board. I sprayed it with isopropyl alcohol and used cloth the clean up the connection where it looked wet. Then blew the alcohol off with air. Voila! I brought it back home, place it back on and now I do not have any problems. It works like charm. To me that board is what is causing RCA to act like they have ghosts inside them. I dont expect it to happen again, but if it does, I will just buy a replacement for that front panel board. Thanks all, I hope my experience helps everyone out there.
Posted on Oct 16, 2008
Take the control board ( that thing wich the buttons are attached to) off then find the word `key' on it follow its path to the wire and snip that wire
note: this will disable the buttons on the tv but u can still use it with a remote control ive done it works my tv doesnt turn off on its own anymore
Posted on Oct 10, 2012
The way the tact switches are built, they have a metal plate on the front and grounded metal on the back. They seem to be acting as a capacitor and sending false information to the CPU. I soldered a wire from the front of the tact switch to the back thereby grounding the front metal of the tact switch. Problem fixed.
Posted on Nov 26, 2009
Kudos to andredibrava on his solution. I removed that circuit board behind the switches and there was a clear goop around some of the solder joints. I cleaned it with a qtip and rubbing alchohol. It works great now.
Posted on Nov 13, 2009
Mine turns on and off by itself,i was on this website looking forr an answer
Posted on Jun 09, 2008
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Posted on Jan 02, 2017
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