Quoted from vid1900:FIREPROOFING SYSTEM 3-11 POWER SUPPLIES.
Whenever you hear someone boasting about "Williams Quality", you automatically know that they have no idea what they are talking about.
Undersized GI wiring, toasted connectors, thin clearcoat and paper thin ramps are nothing compared to your game actually catching on fire.
Why would it catch on fire? Because Williams neglected to fuse the bridge rectifiers! Not in just one model, but all the models up to 1987 (ironically ending with the game "FIRE!").
A Bridge Rectifier turns AC current into DC. It is basically 4 diodes in a single, easy to mount case.
If we know one thing about diodes, it's that they short out all the time.
If we know one thing about electrical shorts, it's that if you don't have a fuse to break the circuit, you often have a fire.
So it is vitally important that you perform this safety mod on all your Williams pins made from 1977-1987.
Thanks for the reminder Vid! I'd done this years ago to several games but your post reminded me to do it to a couple more recent acquisitions. The pinball world is a slightly safer place thanks to this.
Chad
Milan, IL
