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Saturday 18 November 2017 at 20:24
IRQ will start pulsing if I touch the top of the transistors in the reset section. That's with me grounded. So there is something flaky there. I don't have to put pressure on them, just touch the top. I found it by trying to flex the board a little, and started pushing around a little looking for a...
Source: http://pinside.com/pinball/forum/topic/system-11a-start-up-process-pia-error/page/2#post-4079978