Jonesy,
Thanks for your reply and sorry if I'm being dense but would a vga
breakout cable have the individual lines (r,g,b,h,v) as coax? That is
really my question. It seems awfully thin. In any event, google has
not been helpful in understanding what is going on here. I've tried.
It isn't just a termination question but understanding what the make-up
of these standard cables is.

James, NSM
The problem is definitely in the connector. If I wiggle the blue BNC
connector, there isn't a problem. I can also put a probe on both ends
(attached with a long wire) and see there isn't a continuity problem in
the wire itself.

Again, any help would be appreciated.