Title: Trouble shooting an IGT Aristocrat Post by: bikerman on December 05, 2009, 10:41:31 AM I have a 1981 Aristocrat 5 cent machine that only lights up when turned on. The display does not light up. None of the motors or solenoids engage or click. The coin mechanism doesn't do anything either. I have checked the voltages on the input and output of the power supply board and all are close to the voltages they should be at. The handle is also locked in position and the reels are free spinning. Seems like there is a lack of power to something. I have two mpu boards that have new batteries on them, one the coin in light and the coin accepted lights come on when powered up, and the other the lights do not come on. I am not sure which board is doing the right thing. I am going to try cleaning more of the contacts and wires today.
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