Question about RCA P52937 52" Rear Projection Television

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I have no front control panel working and changes channels

I have no front control panel working except the power switch and the channels keep changing on its own from 77 to 98 to some other channel constantly and my remote does not work. Thankyou

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The front controls are called Tac Switches. They have a tendency of becoming corroded and sending erroneous commands to the micro. You can disconnect the lead coming from the control panel to the chassis and see if it quits. If it does, that answers your question. If you decide to replace them all, try Encompassparts.com

Posted on Jul 15, 2009

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I have a Panasonic TH-42PX50u that suddenly is stuck on one channel and no volume control either. Same whether using remote or on TV. Only turns on and off no other control.


Try changing the input device to something you are sure, works such as a DVD player. Look for any loose contacts in RC jacks/sockets/Cable. Look for jammed buttons on remote and/or on control panel. Try removing the batteries from remote and operating from the control panel of TV. If these are ok, Switch off TV manually, switch off power, remove plug and retry after 48 hours. If problem persists, please refer it to a qualified service technician.

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First connect the cable to its cable input socket at rear.
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I have no control over the channel selection; the channel keeps changing and I'm powerless to stop it. The issue is not with the remote; the same thing happens if I attempt to tune to a channel manually on...


The problem is likely with your front panel control buttons - the CH up button (tact switch) is stuck on (shorted or changed value). In order to temporarily correct the problem remove the Ch up switch that is located on the front panel control board - it would have to be unsoldered- and then when one is available replace the "tact" switch.

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ok, let's try the simplest things first.... unplug the tv from the wall, and remove the batteries from the remote. wait about 5 or 10 minutes. reinstall the batteries and plug the tv back in. try it again. actually since you said you tried another remote, you can skip removing the batteries from the remote. if it still does it, try unplugging the tv overnight. if it still doesn't work right then, you have a processor problem, and need to have it looked at by a service tech.

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