Thanks for this. Unfortunately this didn't work for me.
It's frustrating because I have another Soundbar connected to a different Vizio TV and have never had this issue.
I'm getting an extremely loud buzzing/grinding noise coming from my Klipsch sound bar when I turn off my Ultra 2022 (just bought it two days ago). It's ARC connected to my Vizio t.v. Other than that it's working fine. I don't know how to p.m. you.
Thanks for the post.
If you disconnect the soundbar from you home setup, do you hear a buzzing sound from your TV set when you turn off your Roku device? In addition, can you please explain what you mean by turning off your Roku device? Roku devices do not shut off in general unless you unplug them.
With more detailed information, we will be able to assist you further.
Thanks,
Danny