When you first turn the game on, there is a relay, a few coils, and a motor or two on the 50V line that could be problematic.

I'd start by isolating the issue. If you unplug the playfield jones plugs, does the fuse still blow when you turn it on? If so then your shutter motor is likely at fault.

If not, then the job gets harder, but hopefully not by much (you can plug the playfield back in at this point). The simple stuff is the stuff that's always active when you turn a game off and back on - the replay reset relay and the replay register. Set your credits manually to zero if they are not already there, and then try again.

If the fuse blows, there's one more simple thing to check - have all the balls lifted? The lifter motor may have shorted. If not, it gets considerably harder. But there's other stuff to try and a few likely suspects. Report back.

If, on the other hand, your problem is when you hit the start button and not when you turn the game itself on, let us know that too.

Nick, just as an after thought.
When I replaced my two motors, I used
disconnect plugs, just in case I may want to
isolate one or both
Terry K
p.s.
Correction, when I said that I could isolate my motors, I
meant, stop the motor(s) from rotating.The are 120VAC.
The disconnect plugs do allow for easy removal/replacement!!

Also worth noting that a motor problem may be mechanical. Like a ball is stuck in a hole and cannot go down when the shutter tries to open/close, and the increased load causes the fuse to pop.

A quick disconnect would make isolation and replacement pretty easy, Terry!

Yes, the information I posted was in regards to Bikini (but it works for almost any Bally bingo generally).

do you have a 10A circuit breaker setup ... one of these:10A circuit breaker

https://www.amazon.com/RKURCK-Thermal-Breakers-Overload-Protector/dp/B081PFZWFX

connected to a blown fuse like this:

https://pinside.com/pinball/forum/topic/making-and-using-a-fuse-breaker

you can go one step further on BCP's method ... remove all the plugs between the head and the cabinet/playfield. Turn on game and nothing should happen because you also disconnected the power switch.

unplug game from wall and jumper 40P to 90P on the 24 pin socket. There's two 24 pin sockets, but only one has plastic coated wires on the two bottom positions on the right side. Jumper those two positions, plug game back in and it should immediately wake up - you jumpered the power switch wires closed.

if it pops the 50V fuse/breaker, your problem is in the head.

This may help.
Terry K

Bikini wireing (resized).jpg