Take the glass off, and see if any pairs of those solenoids trip the fuse.

Pull on all diodes and see if any are broken.

Did you do ANY service on the machine lately?

I made up a set of these circuit breakers that fit in a fuse holder after I saw Clay use them.

Perfect for this kind of job, lol.

Circuit-Breaker.jpg

_{Post edited by vid1900 : pic from firebirdpinball.com}

Not possible EXACTLY at the same time, but close enough for our purposes.

I pull those things out of everything I scrap out.

I have probably 10 of them.

If you needed a 2.5A, I would choose a 2A. Better to be smaller than larger, of course.

I often use a 5A in place of the 7A that system3-6 use and it never blows (unless there really is a fault).

If I did not have a 5, I might use a 3, but pull the GI line to lighten up the load while testing.