Ultimate MPU Pinball Replacement w/ Test Card | AlltekSystems
Ultimate MPU for BALLY and STERN pinball games
MPU 100/200 battery board for Bally/Stern games – No Quarters Arcade
Big Daddy - Boards
Bally/Stern - Alltek ULTIMATE MPU
Here's a follow up image from my first post on this Bally 1978 Playboy machine. I've opened the backbox and the mpu looks like this (mainly corrosion on bottom). The light blinks
CKBLY-MPU - Connector rebuild kit for wiring harness and board headers on all Bally and SEI Stern boards