I have dish network/dish HD with the VIP622 dual tuner hd/dvr.. as of lately only certain commercials and shows (like deal or no deal last night) come on but have muffled sound.

It just sounds like someone talking into a pillow, and very quietly. No other HD or SD stations do this, just the main 2/4/7 NBC/CBS/FOX types programming. It can range from 1 commercial out of a series, to a whole show like deal or no deal.. and its quite random.

Tthe AVR appears to work fine with any movie, audio format from any other source station.. has anyone else encountered this lately?

I go optical into my AVR from the vip622