Chiming in to join the club!

I have schematics for all boards except for the Infrasense. If you have one, please let me know. I have provided scans of the blueprint-sized schematics to IPDB but as yet they have not been uploaded. PM me if you want a copy. This is NOT the crappy version in the manual.

All ROM code has been backed up and also provided to IPDB. Previous description on pinrepair.com indicates the unique chip on the Infrasense board is not replaceable. This is no longer the case and I have several spares should someone need them. This is the 68701 chip, which simply put is a 6800 with an on-board EPROM.

The motor control board has been duplicated and extra boards will be available for sale in the coming weeks should you need one.
The unique "mirror image" 6 digit display can be converted using a standard 6-digit Bally display so that too has been overcome.

I've located 5 so far in Southern California so I know there are a few out there. If you have this game I also ask you to join in this thread and be counted.

The reproduction motor control boards are almost sold out. If there is demand I will have a 2nd run made. Each Midnight Marauders uses (3) motor control boards each. I was very fortunate to have found additional information for almost all the boards used in the game that lists Midway part numbers (and oftentimes the generic equivalent), thus making replacement components much easier to find now. Such as the IR LED in the gun and the IR phototransistor in the rack. Once scanned this new information will be available to anyone, just PM me. I always provide Jay at IPDB with everything I find so all this will eventually be permanently housed there. Until that time PM me for anything you need. Again I can't stress this enough -- There is NOTHING electronic on this game that can not be fixed today! If you find one in the wild and are hesitant to buy it due to stories of things not being able to be repaired, this is no longer the case.

I now have stock of pre-programmed 68701 IC's used on the infrasense board. This is the chip that pinrepair.com said was unobtainable. This is no longer the case. $50 each plus shipping.

John

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I've looked through my paperwork and found nothing more than the coil numbers used as well. If you look at the Cybernaut manual which lists the more common Bally number and Midway number, nothing coil wise cross references as far as common pinball coils go (bumper, knocker, saucer, etc.)

The electronics are off-the-shelf Bally Pinball. The combo lamp/solenoid driver board is interchangeable with Gold Ball and Grand Slam. The unique board to the machine is the infrasense. This board translates the gun shots and target hits into switch closures that the Bally MPU can understand.

The "rack" is purely mechanical. The gun uses an IR LED and the ships each have a IR transistor on them. A successful shot is then processed by the infrasense board and turned into a corresponding switch closure (electronically) that the MPU uses.

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