Originally Posted by snowjim
I have a LG 65OLEDC8 and a Yamaha RX-A3030 where I have activated HDMI ARC to get sound from the Smart-TV to the Receiver. The problem is that the control part of ARC is messing up my Logitech Harmony schema, it changes the input on the Receiver in a strange way.
I have looked for a setting to turn off only the control part in ARC but there is only one setting in each of the producut for HDMI ARC(ON/OFF)?
Do I have to use optic input from the TV instead or have I missed a setting?
ARC requires a dedicated input on your receiver. On your particular receiver, the default is “Input 1”, but can be changed in the “HDMI Controls” settings (see page 124 of your users manual
) to be Inputs 1-4. Once you choose an input to use, label it “TV Audio” and understand that it cannot be used for anything else except receiving audio from the TV.
Make sure that “Auto Powe Sync” is disabled in the “Simplink” HDMI-CEC setting on your LG TV and that CEC is also disabled in all of your source devices.
If you still see “wonky” or unprompted switching occurrences on your receiver, it could be related to the inability of CEC to be fully disabled on a source device and its prompting of the receiver to switch to its input. The Apple TV, for example, is notorious for doing this. In this case, it would be beneficial to install a Lindy CEC-less HDMI adapter between that source and the receiver. That adapter totally removes CEC from that device by disabling the HDMI pin that carries CEC.
Lastly, your receiver may want to default to the ARC input whenever it is turned on. If this is the case, you can add an additional command at the end of your Harmony “Activity” setup to switch to the correct input used for that particular activity. Of course, you’ll have to do this for each activity.
So, yes, it may be a much simpler solution to forget about ARC altogether and install an optical cable...