Hi. I'm Steve and I will be assisting you today. I've been here since 2005.
*** Please note that I cannot take a call right now*** - the site is sending you those prompts, not me. If you need phone support, I can opt out and another expert will help you.
Ok, let's see what we can do here.
Are you using a Sonos sound bar for audio?Let me know.
Ok, so you need to tell the Sonos to go back to TV sound.Hold on.
Ok, so it sounds like you have TV Autoplay switched on in the Playbar options.Kill power to the TV from the wall. Wait 20 seconds and plug it back in.Let me know if you get your sound back.
Are you using the Sony remote? The one that came with the TV?Or your cable remote?In this situation, you need the Sony remote.
Ok, so the TV may be at fault. You are going to have to kill power to it somehow and then power it back up.If it keeps doing this, you may need to return it.Can you kill it at the breaker?
I'm here most of the time. Just reply. I am alerted and if near a PC, will answer as quick as poss.
Again, if your TV keeps doing this, return it for another model.Good luck.