Atari Repair
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1 Introduction
Put system info here
2 Games
Put list of games that used this system here (including anything that might not have been pinball)
3 Technical Info
Things like Data East's controller board was a copy of William's System 11 with some changes would go here.
4 Problems and Fixes
4.1 Power Driver Issues
This may not apply to some, as MPU might have been part of it.
Pertains to Atari "Superman" pinball:
All playfield coils except for the flippers do not work. Chip B4/5 (CD4013) is the solenoid enable select. Replacing it restored all playfield coils to normal operation.
Solenoid driver transistors are type 2N6041.
Lamp driver transistors are type MPS-A06.
5 =MPU Issues
Pertains to Atari "Superman" pinball.
Switch matrix problems: many switches not recognized or operating one switch triggers several other switchs. Replace chips H7 (74LS244), E6 (7407), and D6 (7407).
Battery holder corrosion: There is a 3 AA battery holder made of aluminum that will corrode over time causing loss of battery backed data like replay scores and bookkeeping. Drill out the four rivets and unsolder the two terminals to remove the old battery holder. A new, seperate 3 AA battery holder with wire leads can be mounted near the board. The wire leads will solder directly to the + and - terminals on the MPU board. No blocking diode needed as Atari's system relies on ordinary alkaline AA batteries.
6 Power Supply Issues=
6.1 Display Driver Board
Possibly doesn't apply to some, can't think of an example.
7 Game Specific Problems and Fixes
Example would be servo controller on Independence Day pinball
8 Repair Logs
Did you do a repair? Log it here as a possible solution for others.