Do you have any photos of the issue prior to and after repair? It might be good to see what was there and what is there now.

If the fuse blows without any of the solenoids actually firing then you most likely have a short to ground in the playfield wiring.

This doesn't seem to make sense to me. J107 is solenoid power (for ALL solenoids) and J127 is low current drive (solenoids 9-16). If you remove those plugs then no solenoids should work. Can you clarify?

This sounds like D19 on the CPU board is not working.

Try connecting J107 but leave J127 DISconnected. If the fuse still blows then you have a direct short somewhere in the VIO-ORG daisy chain of wires in the playfield. If it doesn't blow then you've got a short somewhere on the other side (J127). I don't think it's the second case because a solenoid would actually fire when you power on that would cause the fuse to blow. It's more likely you have a short in the VIO-ORG wires.

If that is the case then you'll need to trace the wire in the bundle of wires to see if there's any obvious place where the insulation is missing or there's an errant connection to ground. Another thing you can try is to lift the playfield up and power on. Sometimes a wire touches a part that is connected to the ground braid throughout the cabinet and that's your short. If it blows with the playfield down but NOT with the playfield up then it's positional depending on the playfield and that should help you locate the problem.

That's where I'd start.

Finally ... if you want to rule out your driver board you can swap the board from your Party Zone.