Wow. I feel your pain. I know nothing about EMs so can offer no real help
My suggestions would be
1. to reach out and find someone with an identical era, working game. So you can build a picture of what your game "should" do. Get yours placed alongside it. See how theirs differs. I use this technique to zero in on tricky faults in my games. This is what @Nedreud and @astyy have done as asty has taken on an incomplete project
2. Find an expert in these things to get you past this impasse. Take your game to this wizard and reward said wizard
3. Admit defeat, place it on ebay for parts, buy a working zac
The art looks great. These old zac EMs have real character. I hope you can save her, but pinball is meant to be fun and not a sisyphean task
My suggestions would be
1. to reach out and find someone with an identical era, working game. So you can build a picture of what your game "should" do. Get yours placed alongside it. See how theirs differs. I use this technique to zero in on tricky faults in my games. This is what @Nedreud and @astyy have done as asty has taken on an incomplete project
2. Find an expert in these things to get you past this impasse. Take your game to this wizard and reward said wizard
3. Admit defeat, place it on ebay for parts, buy a working zac
The art looks great. These old zac EMs have real character. I hope you can save her, but pinball is meant to be fun and not a sisyphean task
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