Hi @DebandRoma
Welcome to the Sonos Community!
Sorry to hear of this issue you are having with not getting any TV audio from your Arc.
If you have not already called in, I would recommend that you first ensure you don’t just need to select the TV Input as the source in the Sonos app. If that is not the issue, then I recommend the same as @Airgetlam - please get in touch with our technical support team who have tools at their disposal that will allow them to give you advice specific to your Sonos system and what it reports.
I hope this helps.
"Common sense is the collection of prejudices acquired by age eighteen." - Albert Einstein