I am having difficulty adding my second component to this VSX-84TXsi reciever. I started with my Pioneer TIVO as the Sat source, Composite video in-1, Opt Audio plugged into Opt-1, configured and no problems. Then added my HTPC, HDMI-1 and Opt-2, configured the DVD source for these inputs. No problem with the video, but no sound. Just to make sure I had no problem with the HTPC, I temporarily switched the Opt-1/2 and changed to TIVO as source, HTPC sound coming out, no sound when in HTPC as source.
I tried the HDMI-1 source configured for HDMI-1 (duh) and Opt-2, good video, no sound.