To me this looks like a problem with the video input, not the control cable, since it appears the rec command is reaching the deck as it should (the deck does go into rec after the NO INPUT message, right?).
Which kind of input are you sending to the deck? Component, SDI, firewire or something else? And what about the audio?
When Cris here asked wether you are able to get audio and video signal to the deck, you answered yes. Do you mean that you can see the video on the deck’s monitor when the deck is in stop/pause, but not when in rec? Or does the image appear more randomly?
(Oh, and since this is my first post, after a lurking for a long time, I guess I should throw out a big hello to everyone as well 🙂