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Saturday 28 October 2017 at 08:36
I'm told the sounds are controlled by the solenoid lines. In addition to all the boards I just swapped, one by one, testing in between, I also just now put in a new Power Rectifier board in the base cabinet. The problem remains. I also put it in switch test mode and tested all 40 switches as list...
Source: http://pinside.com/pinball/forum/topic/xenon-sound-mystery#post-4043828