On the remote control there is a tv mode/dvd mode button. according to the manual, if the tv is set to the dvd recorder (av1 on my tv) then when using this switch in tv mode you will change from the internal tuners of the recorder to the tv tuner. mine does not do this although I do get either the tv mode or dvd mode flag on the screen but it stays on the dvd tuner all the time. I spoke to pioneer and they said do a total reset, have done this with no result. Any ideas??