Hey Jamie, did you get any help on this? I'm curious as I'm going through the exact same issue. The SR I'm trying to get running again is the exact same as yours, with the D-Mon display. They were modified by CineAsst in Toronto, a now defunct company.
The board is very different than any of the arri boards. I've noticed that when I replace the 10 amp fuse on the board ( the bottom fuse receptacle) and try to run power to the camera, it shorts the fuse. (The 1.5 amp on top doesn't short however) I'm unsure how to resolve the issue, or figure out where the problem is on the board, but it seems like we're both dealing with the same problem on the same camera.
I was able to track down a guy who used to work with the company on the sales side, who said he would try and get in touch with some of the folks who used to do these modifications. I'll let you know if he finds anything out that could help.
If you figure anything out, please let me know, I've been tinkering away for quite a while now whithout a solution.
