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- 21:02, 18 March 2022 diff hist +110 General →Resistor Networks
- 20:51, 18 March 2022 diff hist 0 N File:BussedResistorSubstitute.jpg
- 23:35, 17 March 2022 diff hist +378 Williams System 3 - 7 →An Alternative to Rebuilding the Reset Circuit (System 7): Added minimum parts image for S7 reset mod
- 21:53, 17 March 2022 diff hist 0 N File:System7ResetSection.jpg current
- 11:15, 17 March 2022 diff hist -21 Williams System 3 - 7 →An Alternative to Rebuilding the Reset Circuit (System 7)
- 19:12, 14 March 2022 diff hist +1 Williams System 3 - 7 →Blanking Circuit Stuck Low
- 10:48, 14 March 2022 diff hist +1 Williams System 3 - 7 →Blanking Circuit Stuck Low
- 10:48, 14 March 2022 diff hist +671 Williams System 3 - 7 →Blanking Circuit Stuck Low: Added System 3-7 blanking
- 09:51, 14 March 2022 diff hist +25 Williams System 3 - 7 →The Blanking Circuit
- 11:59, 10 March 2022 diff hist +90 Gottlieb System 3 →Auxiliary Sound Boards: Added image of PCB w/o OKI chip...spelling
- 23:53, 9 March 2022 diff hist 0 N File:GottliebADCPMRemoved.jpg current
- 19:00, 7 March 2022 diff hist 0 Gottlieb System 80 →Haunted House - Upkicker Plastic Tube Mounting Bracket
- 18:59, 7 March 2022 diff hist 0 Gottlieb System 80 →Pop bumper problems
- 18:59, 7 March 2022 diff hist 0 Gottlieb System 80 →Flipper Problems
- 18:58, 7 March 2022 diff hist 0 Gottlieb System 80 →System 80B Sound Board (MA-886) Jumpers J7 and J8
- 18:58, 7 March 2022 diff hist 0 Gottlieb System 80 →System 80B Sound Board (MA-886)
- 18:55, 7 March 2022 diff hist 0 Gottlieb System 80 →Sound Cutting Out / No Sound
- 18:55, 7 March 2022 diff hist 0 Gottlieb System 80 →Replacing the Obsolete LM379S Amplifier with a Modern Amplifier
- 18:54, 7 March 2022 diff hist 0 Gottlieb System 80 →Replacing the Obsolete LM379S Amplifier with a Modern Amplifier
- 18:54, 7 March 2022 diff hist 0 Gottlieb System 80 →Using the MA-483 Sound Amp Board on a Sound and Speech Board
- 18:53, 7 March 2022 diff hist 0 Gottlieb System 80 →Sound "Locks Up" after certain switch closures
- 18:53, 7 March 2022 diff hist 0 Gottlieb System 80 →Different Revisions of the Sound and Speech Boards
- 18:53, 7 March 2022 diff hist 0 Gottlieb System 80 →System 80 Sounds Only Board
- 18:52, 7 March 2022 diff hist 0 Gottlieb System 80 →All Displays Dim or at Half Brightness
- 18:52, 7 March 2022 diff hist 0 Gottlieb System 80 →Display Does Not Light
- 18:52, 7 March 2022 diff hist -1 Gottlieb System 80 →Rejuvenating Tired Displays
- 18:52, 7 March 2022 diff hist 0 Gottlieb System 80 →System 80B Display Issues
- 18:51, 7 March 2022 diff hist 0 Gottlieb System 80 →System 80B Display Issues
- 18:51, 7 March 2022 diff hist 0 Gottlieb System 80 →UDN6118 and Other Display Logic Chip Failures
- 18:51, 7 March 2022 diff hist 0 Gottlieb System 80 →Display Glass Failure
- 18:50, 7 March 2022 diff hist 0 Gottlieb System 80 →Display Power Problems
- 18:50, 7 March 2022 diff hist 0 Gottlieb System 80 →Auxiliary Lamp Problems
- 18:49, 7 March 2022 diff hist 0 Gottlieb System 80 →Lamp(s) Will Not Turn On
- 18:49, 7 March 2022 diff hist 0 Gottlieb System 80 →General Illumination Lamp Power Issues
- 18:49, 7 March 2022 diff hist 0 Gottlieb System 80 →Bad Bulbs
- 18:48, 7 March 2022 diff hist 0 Gottlieb System 80 →Solenoid problems
- 18:47, 7 March 2022 diff hist +9 Gottlieb System 80 →Pop Bumper Driver Board LED
- 18:46, 7 March 2022 diff hist +19 Gottlieb System 80 →Pop Bumper Driver Board LED
- 18:45, 7 March 2022 diff hist -1 Gottlieb System 80 →Replacing the quartz crystal with a TTL Oscillator
- 18:45, 7 March 2022 diff hist -167 Gottlieb System 80 →Using a PC Power Supply For Bench Testing
- 18:45, 7 March 2022 diff hist 0 Gottlieb System 80 →Using a PC Power Supply For Bench Testing
- 18:44, 7 March 2022 diff hist 0 Gottlieb System 80 →System 80B Daughter Board Solder Joints
- 18:44, 7 March 2022 diff hist 0 Gottlieb System 80 →Slam Switch Modification
- 18:43, 7 March 2022 diff hist 0 Gottlieb System 80 →Using a Reset Generator for the CPU Reset Section
- 18:42, 7 March 2022 diff hist +1 Gottlieb System 80 →Relocating the battery from the MPU board
- 18:42, 7 March 2022 diff hist 0 Gottlieb System 80 →Relocating the battery from the MPU board
- 18:41, 7 March 2022 diff hist 0 Gottlieb System 80 →Battery Leakage and Corrosion
- 18:40, 7 March 2022 diff hist 0 Gottlieb System 80 →Power on "Thunk"
- 18:40, 7 March 2022 diff hist 0 Gottlieb System 80 →Power on "Thunk"
- 18:39, 7 March 2022 diff hist +12 Gottlieb System 80 →F2 Fuse Blows At Power Up on 80A games
