Hello! Thank you so much for posting about this. I completely understand your concerns with no audio on the TV. I'll be more than delighted to assist with this issue. Here is a link you might find helpful: https://www.samsung.com/us/support/troubleshooting/TSG01202525/
If this does not help I recommend letting a service technician have a look. As we would like to gather additional information and look at this from a case-by-case basis, please provide the full model code and serial number of the device as well as your best contact phone number, name, and email.
