Thank you for posting this. It is exactly what is happening to me. Has been happening with BBC Amrica for a few weeks andnow this past week on AMC. I have checked the cable and everything is tight. I've reset the cable box also, but it still is happening. It is happening on an analog TV. Not on my main digital TV.
Thanks for the suggestion Tendawwgs. Unfortuantely it didn't help. The sound is still cutting out on those two channels, except during commercials. The TV it occurs on is an old analog TV (Non HD) and I have an old Motorola cable box with it. There is no DVR. Can it be the cable box? It is old. Although all otger channels are great. Interestingly, those two channels work fine on my main TV, which is a Smart TV (HD). I did press the "A" button and was able to reset the cable box, but no luck. Your help is appreciated.