I had the same problem with 2 of them I bought at the same time. It will fix if you can go forward or backward on the program. OR as you say-reset it. They finally sent me 1 new one. The only change I see is they deleted the silent button. Also it was only a refurbished part. Haven’t had time to know if it works or not. Very frustrating. Sorry to hear. Hope they start helping people.
For clarification, are you experiencing an issue with sound if you are just playing the content without the use of external audio devices or does this issue only occur when the sound comes out of the external speakers.
With more detailed information, we will be able to assist you further.
System restart does work but only temporarily. I am also having this issue and it seems like every time I turn the TV off, when I come back to it, I've lost the sound on all channels, all programs. Then I have to do a system restart to get it back.
Can you please specify the issue you are experiencing? What are the steps to reproduce the issue you are seeing? What troubleshooting steps have you already taken to try to resolve the issue? With more detailed information, we will be able to assist you further.