Advertisements If anyone gets the 721 message on the 'regular' channels like scifi, bravo hd etc, but you have your premium and local HDs, have them turn off your old HD pak and turn on the new one. It took me over 2 hours on the phone with 5 reps, plus the installer at one point, for them to figure out my hdpak wasnt on. DUH i told them I never paid for HD before even and I knew they needed to activate it! But they kept saying i was grandfathered in. I had no clue what they meant but was sure it was a dtv issue as my signals were good.