If the slingshots are working, the problem is NOT with the 1 amp fuse under the playfield. The 43 volts that powers the solenoids is daisy chained from one solenoid to another. You likely have a break in the chain. If you have a digital multi-meter (DMM), start at the 1 amp under the playfield use and see if you have 43 volts DC (you should). Then, follow yellow wire as it moves from the slingshots to the other solenoids under the playfield. I suspect you will find a yellow wire broken off from one of the solenoid tabs.