I have a 60" RCA rear projection tv. Last night it starting changing channels on its own. When I tried the remote, it would not do anything. I tried turning off the tv with the power button on the tv and no go!! I finally unplugged it.Wen I plugged it back in, it did the same thing (kept changing channels) I unplugged it again, and then it would not come back on. Any help will be appreciated.