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Need front button control panel rca r56wh78 circuit board

Can't find this part anywhere

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Go to partstore.com They have a large number of parts.

Posted on Dec 31, 2008

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I have a RCA LCD TV and the power button and volume bottons don't work on the tv. Which board do I need to replace? Model number is 46LA45RQ


If these functions can be done by using its remote control, and only the front panel buttons are inactive, microswtches at the front panel board should be replaced. If functions are not available with a remote control too, the main board is faulty. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/

Nov 04, 2015 | RCA Televison & Video

1 Answer

NEED PART NUMBER FOR PROJECTION HDTV. MODEL R56WH78 FOR THE PROJECTION BULB


Good Morning
your set does not have a bulb it has three CRT'S picture tubes . and if the set is not working its not likely that the crt's have all failed . you most likely have a circuit failure like a high voltage trippler block or some where else in the set . what are the symptoms at start up .

Oct 15, 2014 | RCA Televison & Video

1 Answer

How do i take off the front panel assembly on my rca hd52w59


The lower front speaker grille will need to be removed first by removing the screws along the back edge of the rear cover as shown in the pic below. then just pop the lower speaker grille off then you will see the screws along the bottom edge of the front control panel and also on the rear edge again then that panel lifts off but you will need to reach behind as your removing it to unplug the wires that are hooked to both small circuit boards on that panel ( keyboard & aux input boards)1_28_2012_3_47_13_pm.jpg

Jan 27, 2012 | RCA HD52W59 HDTV Projection Television

1 Answer

I have a RCA R56wh78 projection power button flashing green.


Thats the classisc sign that the CP150, CP114 and CP120 capacitors need replacement. You can get the repair kit called CP150, CP120 and CP114 at www.tvrepairworld.com which contains the capacitors and the CD with step by step instructions on how to do the repair.

Dec 04, 2009 | RCA HD52W56 52" Rear Projection HDTV

1 Answer

Rca r56wh78


The menu btton itself on the front of the set is defective.
1. Have it replaced.
2. Remove the board and unsolder this button.
3. Unplug the front button board.

May 25, 2009 | RCA R52WH76 Television

1 Answer

RCA R52WH74 Circuit Board


when the menu keeps poping up it ussally the front panel cuircit board. This is the board that the front button are on. to remove the board you have to remove front bottom panel then remove the center panel. these panel are attached with about 4 torx screws on both sides the 4 torx on botom of center panel and two on each side..

Jan 06, 2009 | Televison & Video

2 Answers

Menu flahes on and off


contact switches on front panel board are dirty or bad try cleaning switches with contact cleaner first thy are the ones that turn tv off/on vol- vol+ ch- ch+

Dec 20, 2008 | RCA D61W20 61" Rear Projection Television

1 Answer

Can i put my tv on input without the remote


If your tv's front panel isn't working at all and the remote isn't either, then there is a simple fix. The only thing is that you will only be able to control your tv with the remote only. You can disconnect pin 4 at the connector of P001B on the front control panel circuit board. That will disconnect all the tack switches but allow the use of remote. First take your tv rear case off (there is 3 small torx head screws on the rear input/output panel, remove these first. Then there is two torx head screws on the left, top, and right side of the case facing rearward and connecting the black rear portion to the front silver portion). Once the rear case is off, there will be the front control panel circuit board attached in the front of the tv that needs to be unscrewed. Once unscrewed you can see all the connections labeled with eithers words or numbers. On the P001B connector on the front panel circuit board, there will be a 1 on one side and a 5 on the other. The pin 4 is naturally directly to the left of the 5 pin. There will be a bundle of wires leading from the front control panel to the main board of the tv which is on the bottom of the tv. Disconnect this from the main board. Then follow the #4 pin wire all the way from the front panel circuit board, to the connector end that you disconnected (This will be easy b/c they are in a flat bundle side by side). Then just completely remove only the #4 pin connector wire from the connector end. Wrap the end in electrical tape, plug the connector end back into the main board, and put the tv back together and it should work fine with the remote only (the front panel buttons will no longer work).

Nov 28, 2008 | RCA 27F530T 27" TV

1 Answer

RCA P46731at


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.

May 24, 2008 | RCA P46924 46" Rear Projection Television

1 Answer

RCA 27R410T my tv turns itself off and on


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.

Apr 16, 2008 | RCA 27R410T 27" TV

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