Manufacturer Williams Availability Williams System 11 Pinball Power Supply Complete, untested power supply $25.00 Qty: Add to cart Email a friend Question about product? Add to wishlist Details Original Williams System 11 pinball machine power supply board. This board looks to be complete. It looks to have had some repair work done at some point. We found it in a box of spare boards from a cleanout. Original Williams Part #5765-09466-01 See pictures for more details on its condition.