When I use my antenna and switch to channel 12.1 the sound is always muted. I have 2 sound options, for this channel only. The sound is set as English AD as a default. I have to switch it to option 1 which is English to get sound. As I said, this only happens on 12.1. Anyone have any ideas on how to fix this? I’ve had no luck looking through sound settings.

I had this a bit also. It is back to 'normal' now. Went by itself.