Star Trek
Bally, 1979You're currently viewing posts by Pinsider barakandl.
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I totally agree with Snyper.
The MPU only sends solenoid signals to the sound board and maybe one enable line from mpu j1. Your issue is likely a voltage drop caused by a failed component in the sound board or overall poor connectors.
The sound board creates its own voltages from 43v and 12v. When the sound board is hooked up, see if your overall 12v and mpu 5v drops low.
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Gilbert, AZ