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- 09:05, 26 May 2019 diff hist +15 Gameplan Repair →MPU-2 Only - Error In Early Parts Manuals For Switch Matrix Resistors
- 07:16, 22 May 2019 diff hist +944 Gameplan Repair →Switch Matrix
- 07:30, 16 February 2018 diff hist +552 Gottlieb System 3 →Theory of Operation
- 13:51, 25 September 2017 diff hist +3,228 Sega/Stern White Star Repair →Solenoid problems
- 13:44, 25 September 2017 diff hist +48 N File:IO test points.jpg Transistor test points on I/O Power Driver Board current
- 10:28, 25 September 2017 diff hist +691 Sega/Stern White Star Repair →Power Driver Board
- 10:05, 25 September 2017 diff hist +28 N File:IO driver rev G.jpg Stern I/O Power Driver Rev G
- 10:03, 25 September 2017 diff hist 0 File:IO driver rev F.jpg Viperrwk uploaded a new version of "File:IO driver rev F.jpg": Sega/Stern IO Power Driver Rev F current
- 10:02, 25 September 2017 diff hist +48 N File:IO driver rev F.jpg Stern/Sega Whitestar I/O Pwer Driver Board Rev F
- 10:50, 8 September 2017 diff hist +247 m Williams WPC →Failed Electrolytic Capacitor on the MPU
- 10:43, 8 September 2017 diff hist +628 Williams WPC →Failed Electrolytic Capacitor on the MPU
- 16:42, 23 July 2017 diff hist +382 Williams WPC →Muffled Sound and Speech
- 09:18, 7 July 2017 diff hist +540 Gottlieb System 3 →Alphanumeric Displays
- 07:53, 23 February 2017 diff hist +18 Williams System 9 - 11 →Using MOSFETs in the Lamp Matrix Circuitry
- 07:27, 23 February 2017 diff hist +580 Williams System 9 - 11 →Using MOSFETs in the Lamp Matrix Circuitry
- 17:06, 15 February 2017 diff hist -97 Stern S.A.M. System Repair →No Sound
- 17:02, 15 February 2017 diff hist 0 File:PCM1755 U16.jpg Viperrwk uploaded a new version of "File:PCM1755 U16.jpg" current
- 17:00, 15 February 2017 diff hist +122 Stern S.A.M. System Repair →No Sound
- 16:57, 15 February 2017 diff hist +163 N File:PCM1755 U16.jpg PCM1755 D/A Converter at U16 on the S.A.M. board. Failure of this part is often responsible for a complete lack of sound in an otherwise completely working system.
- 16:53, 15 February 2017 diff hist +862 Stern S.A.M. System Repair →Sound problems