My 46" Sharp LC-46D85U has an audio problem with only one OTA channel (WBZ DTV 4.1 (30.1), Boston). Whenever the station goes from HD to SD, SD to HD, local to national feed, or any combination of these, the audio stops working. The only way to fix it is to change channels, and change back. Then the audio is fine, and seems to stay intact. This has something to do with the TV, not the channel, because every digital TV, or receiver I've got, or had, never had a single issue with this station.
