Hey guys, I picked up a Black Rose earlier today, basically working except for some cannon alignment issues. It was still working when I first got it home and into the basement. I did all my under the playfield work (cannon adjustments) with the game off, then slid it into my lineup.

Upon booting, I got a "check F114 and F115" message. F115 was blown. I removed the power to the CPU, replaced F115, and it booted normally. For this, I'm suspecting U20 on the CPU (ULN2803) or another IC, and will test those soon.

When I replaced F115 initially, I made the mistake of putting a slow blow in the place of a fast blow; I blew at least one solenoid fuse at that point. Now, when I have the solenoid connectors (J107, J127, J130) connected to the board, F104 and F105 blow; when I disconnect them, fuses don't blow. In total, the game has blown F104, F105, F114, and F115.

*maybe worth noting, the game has a Rottendog CPU board.

That brings me to a few questions.
1. It seems like initially my problem was just with the CPU board; should I suspect that's the root cause? (I don't think I had fuses beyond F115 blowing until I overfused that one, even with everything connected.)

2. Could CPU issues cause stuff on the driver board to fail?

Any help would be much appreciated; I'm a little miffed by how adjusting the cannon and moving the game could kill it, unless my Rottendog CPU is just that screwy.

I didn't see anything at first glance but will check again.

Would an MPU issue potentially end up causing the driver board issues I seem to have now?