Tv channel problem. My 42" LCD HDTV by Vizio doesn't change channels by the remote, or the

Question

My 42" LCD HDTV by Vizio doesn't change channels by the remote, or the buttons on the TV. This was an auction product, which was originally a return, but channel 10 works fine. The volume buttons work. On the menue, it states "no channels" When I push info on the remote it says "not rated, cc-off". Is this a programming problem. I don't have a manual with this set... Bob help!!!