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Sunday 11 February 2018 at 18:35
Hey all, My Royal guard machine is making a very loud hum. I isolated the problem to the unit (step unit?) in the back head. Pulled the cover off and solenoid was very very hot. Would this be a open relay somewhere? I'm new to working on pinball machines and reading the schematics. I own 5 Wed...
Source: http://pinside.com/pinball/forum/topic/gottlieb-wh-royal-guard-problem#post-4224335