I have a Tivo box connected via hdmi to my sony tv, my sound bar is connected to my tv via a optical cable, on occasion there is no sound when I am using the Tivo box, I have checked from other sources and the sound bar is working but not with tivo, sometimes it just starts working, other times when i restart the tivo box, but currently it is not working and the mrs is annoying me to fix it, so any help gratefully appreciated. Thank you in advance.
I have my tivo connected to TV via HDMI and sound bar also connected via HDMI to the TV's Audio return channel (ARC). Normally the soundbar does work, like you it occasionally has no sound. I find that just restarting the soundbar works (and is quicker than restarting the Tivo). Not the reason why the soundbar doesn't connect, but a slightly easier solution. Don't know if it works for the optical input? If anyone has any other suggestions, I would welcome them as well.
Just another VM user trying to help, so no guarantees that my advice will work . If my suggestion is helpful, please mark it as helpful; it may help others. Just want to say "Thanks"? That's the Kudos button.