Thanks for the reply. I had seen that thread but it didn't help.
As an update, I have now found the problem is with Sky Q. ARC and CEC work fine when the sky q box is not plugged in to the receiver - the second I plug in the sky q box the ARC sound cuts out. I have now installed a CEC...
I've just bought a new Sony STR-DN1080 to go with my LG OLED B6. With my previous Denon 3313, I had HDMI control working for power on/off, volume control and source switching no problem. It also provided ARC for netflix etc. Now with the DN1080 I'm getting none of that - i've checked the...