Audio ARC completely broken after updating to tvOS 17.0

Hello rudyimperiale,

Thank you for reaching out to Apple Support Communities.

These steps may be able to guide you:

"Turn on HDMI ARC or eARC

1. Set up your single or stereo pair of HomePod or HomePod mini speakers as the default speaker(s) for Apple TV. 
2. Go the Home screen on Apple TV and select Settings > Video and Audio > Audio Output. 
3. Under Default Audio Output, make sure that the room with HomePod or HomePod mini is selected. 
4. Under Audio Return Channel, select Play Television Audio. You'll know ARC or eARC is turned on when it says On (ARC) or On (eARC).

If HDMI ARC or eARC isn't working as expected

• If you can't set up HomePod or HomePod mini as the default speaker for Apple TV, make sure that your HomePod or HomePod mini and Apple TV are added to the same room in the Home app. Then try to set up your HomePod or HomePod mini as the default speaker for your Apple TV again. 
• Make sure that your TV supports ARC or eARC. You can check by seeing if there's an ARC label next to your HDMI port, or you can contact your TV manufacturer.
• You might have to turn on ARC, eARC, or HDMI-CEC in the settings of your TV. Check with your TV manufacturer for details. 
• Unplug the HDMI cables from your TV and Apple TV. Then plug the cables in again and try to use ARC or eARC."

Additional details can be found here: Use HDMI ARC or eARC with your Apple TV 4K

If the issue persists, can you provide a few more details? What is your exact tvOS version? Has HDMI Arc worked perviously? Also, are you seeing any errors or alerts?

Cheers!

Hey there rudyimperiale,

Can you try restoring your Apple TV to factory settings?

Reset or restore your Apple TV to its factory settings - Apple Support

Set it up again and test to see if it then works correctly.

Kind regards.