I have a stern Wild Fyre that repeatedly blows the playfield fuse after about ten times actuating any coil connected to it. It controls bumpers, outhole, slings, and resets. If I watch the fuse while actuating coils, I can watch the metal slowly bend with each hit until it pops. I have the correct 1/4A slow blow in there.
Here is what I have done to try to resolve it.
I used a new Altek SDB that I had to test if it was the board. Still blew the fuse.
I replaced all coil diodes, and checked ohms on all coils. Coils check out.
I disconnected the pull wires from all coils, and then connected individual coils back. No matter which coil I connect back, it still blows the fuse after a few hits.
I've also scoured for a short associated with any of the coils, but can't find anything. Though I'm starting to suspect this more and more could be the problem.
Anyone have any other ideas for me?