Have any of you had this issue?
I currently have my 105 plugged into my TV (Panasonic plasma) via HDMI 1 and the m-ch analog outs connected directly to my amp. I occasionally lose all sound, and I attributed it to my Marantz AV 8801 preamp, which I sent out for repair. While it has been gone, I still lose all audio, so clearly the 8801wasn't the problem! I have a Tivo unit plugged in the rear HDMI input. It tends to lose sound when it's been idle for a few minutes. To restore sound, I either have to shut off the 105 or switch the input from HDMI in Back to Blu-ray, then back to HDMI. It doesn't seem to happen when I listen to music, so it makes me think there is some strange HDMI interaction.
The above is a portion of an email I just sent Oppo--thought maybe someone here might have experienced the same problem. I'm a little ticked that I needlessly (I think) mailed my Marantz out for repair! I assumed there was something wrong with it since audio was restored if I turned it off and back on again. Since that would temporarily break the HDMI connection, there must be something going on there, and with the Marantz out of the system, it certainly wasn't the problem! Grr...
Edit: On second thought, I have lost audio when listening to music: when I made some adjustments to the Audyssey settings in my Marantz I lost audio--that's what led me to think it was the Marantz that had a problem.
DALI Epicon 2 front speakers; DALI Epicon Vokal center speaker; Definitive Technology ProMonitor 1000 surrounds; SVS SB 13 Ultra subwoofer; Marantz AV 8801 pre/pro; Parasound Halo A51 power amp; Sony XA5400ES SACD player; Oppo BDP 105 SACD/Blu-ray player; Sennheiser HD 800 headphones; Woo Audio WA6 headphone amp.