Denon AVR 3313ci zone 2 or 3 no sound.
I did not find any help on your link.
I kind of had it once a while ago but it stopped working for no apparent reason. I independently tested my external speakers and they work fine. I am using my android or iPod for the source via AUX 1. Speakers are attached to surround back outputs. I have had the Main zone set to both 7/1 and 5/1 to no avail. i feel like of tried every conceivable option.
My previous AVR was half the price and worked great, but lacked the HDMI input/outputs but kinda wished I still had it.
Also the remote does not lite up and is extremely difficult to see the small buttons in normal lighting conditions.