The 1A fast blow fuse will probably blow. There is probably have either burnt coil / shorted transistor or both.  80% of the time you can find a faulty coil by either looking at them as seeing if they look burnt or try to move the plunger on the coil and see if it jammed/melted solid. If you have a meter, set it to resistance and measure each coil. Anything less than 3 ohms is normally faulty.

Once you have located the faulty coil, you can either find which transistor drives this coils from the schematic ( nd then replace the transistor and associated parts from your kit) or measure all the transistors with you meter to determine the faulty one. If you have a diode tester on your meter you can check every tranistor on the board in about 2 minutes.

Definitely worth changing the 2 large capacitors on the solenoid board (and perhaps also rebuilding the 5v and HV PSU) if the game is a keeper.

Were the pop bumpers still working when then the fuse was blown?