I have had a few sound issues.. but only on random recordings. Generally, I dont think there is anything wrong with the FEED etc that should be causing this, unless its channel specific at the time. If yours is cutting in/out consistently, may be something else in play.
Reboot the box if you havent already (unplug and re plug back in) Try another HDMI cable if you can, in case that one is having an issue say with the audio. You could try another input on the TV as well.
Beyond that.. it could be a signal issue.. to the house/internet itself, or the wifi.. not giving it a proper stream. (though I would think would effect the picture as well as sound)
Hi Roger's Tim. I'm having the same issue. Have to restart all the time. Tried unplugging as well. Tech has come out twice and replaced everything. It only happens on the smart tv. The others, not smart, have no problem. What is Roger's going to do to fix this cause clearly others are having the same problem.