First try at this - not perfect, so will try again later this week.
Many years ago my grandfather had this massive logic board hanging up in his shop. In retirement he repaired electronics, including arcade machines, and this is one that was pulled from a broken machine. He died tragically in a car crash when I was a young teenager. I saved this board, among a few other things from his shop, before my grandmother's family threw most things away (that's another story...). I just recently rediscovered this logic board in some stored stuff at my parent's house, and decided I should make some photographs of it.
This is the underside of the board. I didn't quite get the movements right so the left side is a bit soft. I will try again on 4x5 as I think I can be a bit more precise and will be easier to see on the larger GG. I took this with my Linhof 70, 10.5cm f/4.5 APO Lanthar, on Acros 100 dev'd in Pyrocat - lit with my newly rejuvenated Speedotron kit:
Oh, also I looked up this logic board and discovered it was made in 1975 for the Midway arcade machine "Wheels." It's apparently a fairly uncommon cabinet. I found a catalog from the era and this board cost $600 back then to replace, which calculating for inflation is about $2800 today.
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