Advertisements Hello, One of my premium language channels (1790) is displaying blocky, choppy video and sound, as if it were slightly scrambled on my Series 3 cable card. The cable card in my Roamio displays this channel correctly. Is this a cable card or an older Tivo issue? I did have a tech check into it, and he is sending me a new card. I checked, but I did not see channel 1790 as being an MPEG-4 channel. Thanks.