Your input should be configured for the proper HDMI port under system settings but it should also be configured for the proper optical in port. Then use the signal selector to select digital and you should get audio from optical and video from HDMI. As of the combined signal, it sounds like an issue with the origination of the source (PC) and not the receiver. Does a combined signal work if the HDMI is direct to theTV?
1/27/12 at 6:50am