I look at this way.. It doesn't work now, so why not try to fix it? I mean unless there is just no other replacement and this board has to be refurbished or the whole game is trashed. But that's just me,I want to learn this part of pinball very badly so I believe the old saying " You have to start somewhere
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Sounds like you can get an replacement so I think if you fail at the repair then just go get a New board.. All you can lose is some time and a few bucks from what you would have sold the acid damaged board for on E-bay.