I was asked to get this one going for its owner. This is a pretty nice 1975 Old Chicago. There is some minor wear on the playfield, the cabinet and backglass are in pretty good shape. This is a Bally 4 player EM, which looks pretty scary because there is alot going on in this thing!! I haven't worked on one of these before but I was able to figure out the problems fairly quickly. It has a few locked on coils, no lights at all and a few other problems..... 2008-10-26: Had a stuck switch which caused a multitude of problems. 2 stepper wheels would not reset to home position, fixed and cleaned. Has a bad connector, I think I can fix it. Replaced about 20 bad bulbs. 4 players work now. Still has a few bad sockets that I can fix.
2008-10-31:
1. Fuse connection was poor and intermittent which would prevent the game from starting. Repaired.
2. Gen Illumination/switched illymination connection on connector was poor, mostly open. Getting hot. Took it apart and resoldered it that pin, hardwired it to fuse holder directly to share current load anyway...
3. Cleaned player up unit and ball advance unit, sometimes would not reset back to #1 position.
4. Cleaned score drum units, player 1 was very dirty.
5. Player one would reset to 80000 or like 06000 on occassion on game start depending on last score. Worked once it warmed up. It is cold in the garage. I cleaned the switches on the wheels on the main motor in the cabinet anyway.
6. Cleaned the playfield and playfield glass.
7. Fixed light sockets on "game over", "d","c"
8. Set game to 3 ball
9. Switches on playfield are good
10. Replaced one diode, resoldered another on the bumpers.
10. Game plays well and starts up everytime.
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