A few months ago, I started getting audio dropouts lasting 3 to 5 seconds while watching live programming, as well as recorded programming. It's a DirecTV HD-DVR. Onkyo TX-SR805 receiver. I also have the Oppo BluRay player and another Oppo DVD player. No other source has the audio dropouts. When watching recorded programming, I can back up and replay the segment with the dropout over and over. When the dropout begins, there's an audible click from the Onkyo receiver and the "Dolby Digital" display on the Onkyo front panel disappears, as well as the tiny red "Dolby" signal indicator. When the audio comes back, so do the indicators on the Onkyo front panel.
If I switch off "Dolby Digital" from within the DVR's setup, instead of a 3 to 5 second dropout, I get just a very brief, fraction of a second dropout. I have used HDMI from the DVR to the Onkyo, and I've used an optical cable for the audio, and nothing changes. I've tried a different HDMI cable, and I've tried all three HDMI inputs on the Onkyo.
I don't watch enough television to be able to say with certainty that the problem exists on all channels. I watch all of the Formula 1 racing on Speed TV and it's a constant problem on that channel, 607. It also happens on Bravo HD. But last night I spent a few hours watching National Geographic HD and it was fine. The Science Channel HD was also fine. I switched over to Speed TV and there it was again. I also watch the Late Late Show Craig Fergusson on CBS, Channel 4 in Boston, and the problem shows up there.
Directv has replaced the DVR twice. Same problem on all three units. They have gone up on the roof and re-aimed the dish. Directv is unaware of any issues with Speed TV or any other channels.
There is no problem at all with video quality.
Any ideas?