HDMI ARC Not Working

[Bevb 0]

I have a NANO91ANA LG TV connected via HDMI to a Yamaha RX-V677 Receiver. Normally when I turn the TV on it also turns the receiver on and I can control volume via the LG remote, whether it is an app on the TV or from another device connected to my receiver (Apple TV or cable box). Now the receiver is not turning on and ARC audio is not working. I think there may have been a software update the other day, but I'm not sure. However, everything was working properly until last night. The last time this happened it seemed to correct itself (it seems to be kind of sporadic), but this time it did not. I do not know what to do to correct this, but it is a major pain as I'm now having to deal with 4 remotes, plus I can't get sound out of my surround speakers when using an app on the TV.  Any suggestions would be appreciated.

[Vetald 0]

if it does not help, pull out the hdmi cord.

[td47 53]

@Bevb Go to the TV HDMI settings, ensure HDMI-CEC (called SIMPLINK on LG's) is turned on, and ensure it is ALSO on for the Yamaha.

[Bevb 0]

Thank you for your reply. Everything was turned on as it should be, but it just wasn't working. I ended up resetting the TV (per LG Customer Support) and it took care of this. I also replaced my HDMI cable, which didn't solve the issue, but it's a much better one than I had before (that one was old), so I don't mind having done that.