We recognize the growing difficulty in sourcing the old axial capacitors and high voltage transistors, which often lack suitable replacements.
To address this issue, we have redesigned the Williams Power Supply Board D-8345-xxx using modern, readily available components. Our updated design includes an advanced Linea 5-volt regulator featuring the standard LM723 chip, and we have further enhanced the circuit with a trim potentiometer that allows precise adjustment of the output voltage between 4.7V and 5.4V.
During the testing of these boards, the voltage is typically set to 5.08V to ensure optimal stability and reliable performance across a range of pinball systems.
Introducing our “Short Version” Williams System 11B Power Board, specially designed for Williams System 11B machines. This streamlined version of our popular D-8345 System 11/11A board has been carefully redesigned to keep costs down without sacrificing performance. For owners of Williams arcade games using the System 11B platform, this board offers a cost-effective solution without compromising on quality. We’ve removed high-cost components that aren’t used in System 11B machines, giving you a reliable, high-quality power board at a more affordable price. Perfect for pinball enthusiasts who want the same trusted design — now optimized for your specific machine.
This Williams System 11B Power Board comes with a 4-pin plug (yellow/white wires) and includes the additional plug and pins needed to replace the damaged plug in the GI system wiring. Designed to match the appearance of the original power supply, it ensures a seamless Plug ‘n Play installation while preserving the authentic look of your pinball machine. Whether you’re restoring a vintage Williams pinball machine or maintaining a tournament-ready setup, this board is built to deliver consistent, reliable power.
Please ensure that your power supply matches the configuration shown in the image. Fuse F4 is not included; please verify the fuse value in the service manual. We have three variants of this power board and can build it to suit your machine if needed.
Compatible Games:
- 1987 Space Station
- 1988 Banzai Run
- 1988 Cyclone
- 1988 Swords of Fury
It is strongly recommended that our customers possess the essential technical competencies and knowledge required to appropriately install and operate our products while maintaining safety. Any damages or injuries incurred as a result of an incorrect installation or use of our products cannot be attributed to our company, and we cannot be held liable for such occurrences. We would like to emphasize that we cannot be held responsible for any damages or injuries that may arise due to improper installation or use of our products.
