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Wednesday 23 May 2018 at 06:21
tooth brush/qtip and vinegar, clean with water, then finish with 90% alcohol. just hope the connectors didnt get eaten too bad. if so replace them.
https://pinside.com/pinball/forum/topic/terrybs-guide-to-repairing-alkaline-battery-damage
Source: http://pinside.com/pinball/forum/topic/sttng-multiple-solenoid-problems#post-4413228