Add me to the list of HDMI board failures. I've owned it for 2 years an 3 months, so it is no longer under warranty.
I first noticed the issue 2 months ago... the sound simply would not play from any of the sources (HDMI video pass through still worked). So I turned the receiver off, un-plugged it, turned it back on, problem fixed.
Then a few weeks later the same thing happened again, and was fixed the same way. And then it started happening more frequently. And then last weekend it permanently failed. (though it still passes video, just no audio).
I have an older Onkyo HDMI receiver (SR705) that I have hooked up to my PC surround system (though it does not support 3D, which I use for movies & games). As a temporary fix, last night I installed the older (PC) receiver with my Home Theater system and figured I might as well try the broken unit on my PC considering that setup uses the digital optical connection for audio... NOPE, that doesn't even work. If i go into the setup menu on the receiver and access the speaker calibration I don't even hear the buzzing calibration noise which you use to tune the speakers.... It appears everything is broken.
Is this typical of the HDMI board failures others have experienced? or has my NR709 truly become a paper weight?
I'm going to take the NR709 into a local repair shop to see if they can fix it. I have no intention of paying to ship the unit to Onkyo.