Romano and  to AP !

Just reading your comments on the problem, there could be a number of things we can look at ;

1 - As Marty mentioned - Check the leaf switches under the pop bumpers

2 - Fuses blowing on power up are usually a sign of a shorted BR. Over fusing will start more serious problems.

If you can install the correct fuse, and then it does not blow on start up, then the issue will be either a pop bumper switch, or a shorted coil - depending on how the coils are wired. From memory, Hankins use Gottlieb parts - so the switches sound like the issue - or - the switch matrix.