Quoted from FreeBee:What I did when I got my STTNG was rebuilding the driver board. The flashers where not working and the bridge rectifier was busted, so I replaced all capacitors and bridge rectifiers. Check all voltages when not starting a game. If they are lower than normal at least replace the capacitors that belong to that line.
The other thing is that these power supplies just are not designed to handle extra stuff. Although I have to admit I have a shaker motor and a color DMD installed. Ran into some problems a month ago when one of the cannon motors was shorting itself out more and more, and that kept blowing the entire 12V unregulated fuse line out, including all opto's and the color DMD.
I had a lot of trouble w/ the power after I installed my color dmd. Had to replace the capacitors, bridge rectifiers and also do a mod on them. Works ok now. The DMD saps a lot of the power that would go to optos, maybe flashers as well. You should contact them.