Game repair
Williams System 11 RAM Error Fixed
Before throwing parts at a board that won’t work, here’s a few things you can to save yourself a bunch of time and headaches.
Tech tips
Game repair
Batteries
William’s High Speed Display Problems Fixed
Here’s some tips you can use when troubleshooting display issues on your Williams System 9-11 series pinball machines.
Bally Pinball
Factory wiring mistake?
This is a connector for the G.I. on the insert panel. I wonder why this one…
Big Buck Hunter
Repair Log: Stern Big Buck Hunter Pro
Here’s some tips and info on repairing the buck target on your Stern Big Buck Hunter Pro pinball machine. Links to replacement parts in the post too.
Data East
PRO TIP: Rottendog Data East MPU Replacement Board ROM Select Jumpers
If your Rottendog Data East MPU won’t boot, check this out first before returning it or contacting support.
Audio Amplifier
Repair Log: Garbled and low speech on some callouts on Williams F-14 Tomcat.
This Williams F-14 Tomcat has two garbled and low callouts while all other sounds were good. Read more to see video and find out what the problem was.
Connectors
Edge Connector Repair Fun
Here’s an easy way to repair your video game edge connector when the traces are burned or damaged.
Bally Pinball
PRO TIP: Bad special solenoid sections.
What do you do if the special solenoid section of your driver board self destructs? Save it for a shuffle alley!
Bally Pinball
Williams WPC Fliptronics II flipper board fun
Usually when I’m repairing a board just 1, maybe 2 components are bad. This Fliptronics II board was left on my bench with a note saying “it locks up the logic board.”
Bally Pinball
PRO TIP: Servicing early Bally and Stern (‘77-‘84 MPU games) display high voltage power supply
Before pulling your early Bally or Stern power driver board out for service always check your display voltage as it can run high meaning there’s a failure in your high voltage display power circuit.