System 1 Gottlieb Driver Board Replacement

Direct plug in replacement for the original Gottlieb System 1 pinball Driver board. Changes in the design for higher reliability: Higher voltage breakdown transistors for longer life, Lower power dissipation transistors for less heat generation, higher current drive transistors for better operation, simplified design for each of troubleshooting, and silkscreen showing all component designators and locations. Also comes with paper schematic diagram.