Question about RCA P52926 52" Rear Projection Television

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PCB for a 52" RCA Rear Projection

I have a RCA 52" rear projection tv #p52720BA. The buttons that allow the channel selection as well as volume do not work.
There is a PCB behind the cover. I am thinking this is the problem. Is this part available anywhere and does this seem like a possible solution. The power on and off button is the only one that works

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