Welcome @kurokosagi,
Thanks for bringing to our attention that your Roku TV audio is cut out on every channel that you play using your TCL soundbar. We appreciate the troubleshooting steps that you have tried trying to fix the issue.
Before we proceed, could you please provide us with the exact model of your Roku TV? In the meantime, can you disconnect your TCL soundbar from the Roku TV and test if the issue persists while it is not connected?
We look forward to your response.
Cheers,
Roku Community Team
Riamie D.
Roku Community Moderator