Question about RCA P52926 52" Rear Projection Television

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Rca 52" rear projection tv (P52926) volume control LOCKED!!!

I have been having a problem with my rca 52" rear projection tv where the volume control is locked, i can not rasie nor lower the volume, sometimes i have unplugged the tv to reset but lately that has not worked, when it has worked the display on the screen shows the time, the channel and an item that says UNLOCKED, then i can adjust the volume otherwise i can not adjust the volume. if anyone might have a solution i would greatly appreciate anything at this point. (manuf. 2000)

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  • gary garcia Feb 26, 2009

    thank you very much will follow your recommendations



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This can be a tricky one, I would check the 5 and 3.4 volt lines first with a DVM (analog meter will not due) then with a scope to see what the voltages are and what they look like. A bad cap on the rail for the e-prom can cause this or the eeprom may be bad, this also happens. It might be best to contact a scv. co. as you can a lot more problems in that area if your not familiar with it.

Posted on Feb 26, 2009


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Yes. Its probably a stuck button on the TV's front panel. Try pushing or wiggling each button on the panel. It could be the channel up/down buttons or volume up/down, menu, etc.

When there is a button that is making slight contact, it keeps the microprocessor busy attending to the command its erroneously receiving from the offending button and may not allow other functions to work when this occurs.

It doesn't matter which button is stuck, any of the symptoms you describe can happen.


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