I worked on the power supply tonight. I replaced all of the header pins on the board, installed two new 6A4 diodes at positions D7 and D8. I also replaced both of the bridge rectifiers in the head and tested all of the voltages. So far so good! Next up: Bench testing the CPU board and replacing the 40 pin interconnect between the CPU and driver boards.
Firepower Update – 2/10/2010
– February 10, 2010Posted in: Pinball, Restorations
