onkoyo tx sr608
im sending the signal from my xvt55 tru led vizio tv, to the reciever via RCA cables. although i also have an HDMI cable linking the two, and an optical cable. i've tried turning off all digital outputs linking the tv and reicever so that the signal can be sent to the reciever through the RCA cables, but to no success. i'm at wits end with it. i'm sure i'm just not doing something correctly and is a simple fix. any help would be appreciated.