...since at least Tuesday evening when we tuned in to watch episode 6 of "Smith". Great picture but no sound no matter how high we up the volume. Everything is working perfectly on all our other channels, and was working well on The 101 until just earlier this week. Our setup has not changed for 3-4 years when we got our new big-screen Toshiba, so we are convinced the problem isn't on our end. Emailed & phoned DT but got no help at all. Any suggestions will be greatly appreciated. Thanks!