Gottlieb Magnotron (Gottlieb, 1974) start-up issues...(wall of text)

[Funkmunk3y]

Deleted.

 

[Coil_Smoke]

Thanks Coil Smoke for responding. I have the original schematic, came with the machine. I don't see a Ball Counter Relay listed on the schematic. There is a "Ball Shooter Relay" ----- is that what you were referring to? I will try switching from 3 ball to 5 ball.

I'm used to seeing a ball counting device in the back box. Usually referred to as Ball Count Unit. I don't have much experience with multi-player EM's. I'm not sure if that's a ball counter in the back box photo of this Duotron machine. These counters are a stepping device that advances with the draining of a ball, They trigger the end of the game when they click up to the last position. Then they get reset to a game start position. I guess this is not being much help...C-S

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[pinballdaveh]

i think this issue is either game over relay or last ball relay related. check latch, trip, and reset of these. check schematic circuits on these also to track down problem.

 

[silvers194]

I tried switching from 3 ball to 5 and same thing happened. When I manually click the stepper in the back box, it seems to advance OK. I cleaned the contacts on the stepper and there is no change ---- when I press the game start button, the stepper rotates through, and then just goes to Game Over.