Add my 709 to the list of HDMI/No-audio problems. Video is fine. I've owned this receiver, with light use, for 24 plus a few days when the problem started a few days ago.
Symptoms? Turn it on and no sound and the Network will not initialize. After some trouble shooting (switch cables, headphones, factory rest, etc), I also noticed that the LED light for the volume knob is not on when there is no audio, and there is no 'click' either. I did initially notice that the top of the case was very hot when this first occurred.
I did find that turning the receiver on/off several times will eventually cause it to 'catch' and I get audio (as well as the 'click' and LED on the volume nob). But I expect that eventually fail if I continue to try and force the receiver this way.
After reading this forum and others I left a comment on Onkyo's facebook page yesterday. I see today that they have answered a few other posts after mine was made so I hope I don't go ignored! I'd expect a longer life from a high-end piece of equipment like the 709! And I'm not ready to open the receiver and try the bake method yet.
A second question for a few of you: I see that some of you have placed PC fans inside of the cases. Are there 12-volt or 5-volt plugs located inside of the cases?
Or did you wire the fans to something external? If external, what did you use for a power supply? If there is room, a nice, low noise 120mm fan would be great!
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Last edited by tiggers; 07-29-2014 at 02:38 PM.