I have a similar but different problem with the Balrog. My flasher doesn't work and I've traced it to the orange (hot) wire inside the bundle. Oddly enough the bundle for the flasher has two larger gauge wires and two smaller gauge wires, the former being used for the flasher. The switch uses the striped wires. Both connect to the IDC connector under the playfield.

My follow-up question is -- did you just remove the wires from the IDC connector and then force new wires down into it? IIRC there is a special tool to put wires in IDC connectors. Is there something (like a screwdriver) that will work in lieu of the tool?

I know I could do that and it'd work fine. Just wanted to run a new bundle from flasher to connector so it doesn't look like it was hacked. Silly, perhaps, but since judremy is going to be kind and lend me his idc tool, why not have it be a brand new wire flasher to connector. I think this time, to replace it, I'm going to use some wire that has more strands so it's a bit more flexible. That should prevent the problem from happening ever again.

Oh, slightly o/t but I got my 10.0 roms to replace the 4.01/4.03 pair that was in there. The machine is pretty much completely different now. What an amazing difference six major iterations of the firmware makes