Hi, I'm having problems setting up my new Yamaha RX-V1700. I walked through all of the setup screens and everything works great with sound when watching a DVD, but when I switch to play a DVD I only get sound out of the Left Speaker. I have switched speakers and the Left always works; both work when on DVD. I don't see anything in the set up screens that would show volume levels for right left channels based on the source selected. Any Ideas out there?