A-12697 WPC Power Driver

Old Power Driver Boards fail. A lot.
Fried GI section, random resets, weak 5V power, cracked solder joints, worn connectors, ageing bridge rectifiers, swollen or leaky capacitors — after decades of heat and stress, original boards are simply at the end of their service life.

Even repaired originals can be a gamble. Removing the five large capacitors often pulls out the plated through holes, leaving hidden open circuits or ugly wire patch fixes. And the LM323 regulator at the heart of the 5V supply has been obsolete for years, running hot and stressing the transformer, and contributing to game resets.

Our replacement board eliminates those problems.
• Modern 5V regulator — cooler, more efficient, no heatsink required
• Factory set 5.1V output — stable, adjustable, rock-solid
• Improved GI section — wider copper tracks and more effective TRIAC heatsinks
• Original Williams ground return path design preserved — exactly as Williams designed
• Supports -1, -3, and -4 variants of the same board
• Brand new PCB and connectors — no more chasing intermittent faults
• Authentic schematic correct design — component placement, routing, and connections closely match the original
• Fully tested — ready to drop straight in

This board is a clean, drop in replacement that behaves exactly like the original — same timing, same logic, same feel — but built with fresh silicon, clean copper and decades of reliability ahead.
For restorations, long term reliability, or machines that see regular play, a new board is often a better solution than continuing to patch an ageing original.