GGG,
I found it a little hard to understand myself. Everything being plastic as you mentioned. I often wonder why I get shocked, during the winter months, when I use a light switch, plastic toggle and wall plate and its grounded. Static from walking across the carpet and dry air, I guess it has it dissipate some where. May come back to MILAN's post and understanding ESD. My brother is retired diesel mechanic, so I would find difficult to think something was connected wrong, also considering how MTH has everything color coded. You asked if the brick was damaged and leaking AC Line voltage to the controller, for myself, how would one check for that? If it requires checking inside the controller, are schematics available?. For information purposes, I am in northern New Jersey and my brother/controller are in western Pennsylvania, thus I do not have direct access to the controller.
