Quoted from Johnnys:Actually, I am not even sure if all but 9-16 worked with j127 off. I am sorry.. I think if everything plugged in and powered on f104 will blow and then the game plays kinda but no coils from 9-16 work. I am not sure if the fuse will pop if j127 is off and j107 is connected.... I have been reading so many things about coils, and f104, and j127, j107 from other willaims wpc boards I forgot whats what...my bad.... but I figured if I had someone knowledgeable that could help diagnose this I would go step by step and hopefully figure out if there is a short in the wiring, coils, or backboard.
Do you have a manual? That is always important in tracing this stuff. I don't know your game but I bet the melted wire that you repaired was not the problem but a symptom. I imagine that you have a shorted coil and maybe associated transistor.
I recently had a mosfet short and fry a coil and smoke before the fuse blew. I knew which coil it was and went back to the board and tested the transistor comparing with the others and it was clearly bad. very easy fix when you know where to look.
A multi meter and a little guidance are helpful. PB WIKI and pinballrehab have good instruction
Cincinnati, OH
