No soundtrack on 10-12-16 episode.

Apparently nobody else who posts on IMDb had this problem, or at least nobody else posted about it. But on last night's episode about the trip to Schmidt's high school reunion, which I recorded, the soundtrack I got was very faint, garbled and mostly music with no audible dialogue. The opening title had the regular theme music, and the commercial soundtracks were normal, but the entire episode was like this. Fortunately, Closed Captioning worked so I got the gist of the episode, but this was weird. The tail end of Brooklyn 99 that was before it had the same problem.

I live in the Philly area and watch the show on Channel 29. I have no idea if this was a problem with the Fox Network, Channel 29 or Comcast. Anyone else have this problem?