this is my first post in the forum so I also take the oportunity to introduce myself. I'm from spain, and I have some machines like two Naomi Universal Cabinet with their naomis, Ridge Racer 2 twin, Time Crisis 2 twin, DDR Supernova, etc; and I've 22 years.
My problem is with a Naomi Universal Cabinet that originally have a Lindbergh with Sega Tennis 3. The lindbergh was sold, but in this cabinet i change the lindbergh PSU for a Naomi PSU, and I put a Naomi GD-Rom. No control panel works in this cabinet. I've changed the panel for other two (other from naomi, and other JVS for Tekken 5), I've checked the cabinet Wiring, and in my opinion it's ok, I change the Naomi and no works, but If I put these Naomi in other cabinet, the control Panel works Ok. It could be the Lindbergh I/O the source of this problem? It could be caused by other source?
I take some pictures and a video for help with the problem:

YouTube video: http://www.youtube.com/watch?v=h-rN9gSFTKY