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Gold mine help needed

PostPosted: Mon Apr 03, 2023 9:49 am
by Geofflove
I’ve just purchased a gold mine by UPI - like the one in the pic. Awaiting delivery.

I know the electrics are currently non-working. It was made in 1965 but the circuit board has integrated circuits on it which weren’t around then someone has added a new circuit - see second pic.

Does anyone have any internal pics of the original workings or know any info on where I might find out a bit more about them and ideally a schematic?

Thanks
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