Sony PVM 2950q + Genesis Model 1 RGB?

[LaC]

Anyone have a PVM 2950q with a genesis model 1 hooked up to it?
I recently got it, and my snes works fine.  But the genesis doesn't not want to sync.  It just shows a black screen (which sometimes actually displays something but it's unsynced).
If I disconnect the sync BNC cable from the back it then displays the RGB picture, but obviously unsynced.
Something is not right about the sync from the genesis to this monitor, as a said the snes works fine.
Anyone have any ideas?

[LaC]

Robert from www.retrogamingcables.com helped me out. 
I just needed a 75ohm + 200uf resistor in series on the sync line. Had to also use the Csync instead of the composite video pin.
So hopefully this info helps someone else.