Congrats. HDMI control = CEC (consumer electronics control) handshake. How's the lip sync?
Connecting an RX-810 to a Roku ##TCL 3-series. Was successful at getting sound through receiver to in-ceiling speakers BUT only the TV background sound?! The vocals sounds did not play.
Volume was cranked wayyyy up and wayyyyy down.
I did everything you did but no sound. Then I plugged in an optical cable and the sound was perfect.