So in V's apartment, the TV don't have sound ?
It works for the characters you speak with ?
For sound issues there is only two step on the Support page.
While waiting, if these two steps don't solve your problem, you can send a ticket to the support right now > "Contact Us" (if it's not already done).
Welcome to CD PROJEKT RED Technical Support! Here you will find help regarding our games and services, as well as answers to frequently asked questions.
support.cdprojektred.com
Edit :
Something who come in my mind. You play in which language ?
It could come from a specific language problem
If all the other sounds are "normal" and that you play in different language than english, you can try to save in V's apartment, back in the menu, set the language to english and try if the problem still here.