Whoa....177 posts.
I can't read them all.
I'll stay in touch after you install the new board(s).
One clarification.
Coils in Gottlieb System 1 games, while a game is in play, always have power. What they don't have, until commanded by the MPU, is a path to ground. This is true for most pinball systems. Just FYI.
--
Chris Hibler - CARGPB #31
http://www.ChrisHiblerPinball.com/Contact
http://www.PinWiki.com - The Place to go for Pinball Repair Info