[sirsimon]

i had this problem as well it ws fine to watch video etc when cable was not connected to vcr but as soon as it was all went snowy why i have no idea might be the cable rf i think from stb but i am no expert so gave up and just used other stb to tape ch 1-4 on while was using stb to view another ch etc
sorry if no help i will ask some mates to see what they say ok