I just got this (actually 103d, but hoping for an answer) yesterday. I originally set it up with Split A/V but also connected the 7.1 analog cables to my AVR. Yesterday I could switch between analog multi-ch in on my receiver and HDMI and all was fine. Today, it seems my cable box (connected to the 103D's HDMI input), Pandora and Netflix all play fine via Split A/V but any disc only passes the video directly to my projector. No sound through HDMI2 (only the analog outputs).
Another clue is if I unplug the projector cable from HDMI1 or change from Split A/V to dual display, the sound starts up. Remember, this is ONLY when playing a disc, not any of the other available sources on the player.
Anyone else run into this and resolve it? I'm sure I must have changed something while playing but all looks right.