I have tacked on to the R, G, B, Video Ground, Ground, and Composite pins from the inside of the PS2 before they go to the connector on the back. I am running my R,G,B lines into 220uF caps then directly to JAMMA. I am running the Video Ground directly to JAMMA and jumping it over to another ground. Finally, I am running the composite line to a LM1881 (powered +5v from JAMMA and GND too) sync splitter to grab the C-sync, and running that to JAMMA. After all this, my screen is scrambled and green. I can vaguely make out a pic through the scrambles. If I try using the sync on green, its the same deal. If I remove the green to elimite it's sync, its still scrabled and purple.
Any ideas appreciated!