We recognize the growing difficulty in sourcing old axial capacitors and high-voltage transistors, which often lack suitable modern replacements.
To address this, we’ve redesigned the Williams Power Supply Board D-8345-xxx using up-to-date, readily available components. The upgraded design features an advanced Linea 5-volt regulator built around the LM723 chip and includes a trim potentiometer for fine-tuning the output voltage between 4.7V and 5.4V.
In testing, the voltage is typically dialed to 5.08V, providing excellent stability and consistent performance across a wide range of pinball platforms.
We’re excited to introduce the “Short Version” Williams System 11B Power Board. This revised version of the D-8345 System 11/11A board is built to lower costs without sacrificing reliability. For owners of Williams arcade and pinball games running the System 11B platform, this board offers a reliable, cost-effective replacement. We’ve removed unnecessary high-cost components not used in System 11B, resulting in a cleaner and more affordable design. It’s a smart option for restorers and collectors who want a trusted solution — now refined for modern restoration needs.
The Williams System 11B Power Board includes a 4-pin plug (yellow/white wires) and comes with the extra pins and connectors needed to repair GI wiring damage. Its design mimics the appearance of the original power supply, ensuring a true Plug ‘n Play installation while preserving the vintage aesthetic of your setup. Whether you’re restoring a Williams pinball machine for home or tournament use, this board delivers dependable voltage regulation, long-term reliability, and easy installation.
Please confirm your power supply matches the configuration in the product images. Fuse F4 is not included — refer to your service manual for proper fuse rating. We offer three build variants for this board and can tailor it to your machine if needed.
Compatible Williams System 11B Pinball 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.
