Stern generations: M-100 and M-200 MPUs

All Stern solid-state games use the same power supply design as Bally's AS2518-18. Early games use the M-100 MPU with chimes, then the SB-100 sound board. From Meteor (1979) the M-200 MPU (two 5101 RAMs) and SB-300 sound board are used, with a VS-100 voice board on talking games from Flight 2000.

Systems

• Stern MPU-100
• Stern MPU-200

Related tips

• Stern games from 1980 on need an M-200 MPU

Source: Repairing Bally Electronic Pinball Games from 1977 to 1985, Part One, Clay Harrell (pinrepair.com)