Norton High Ball (Skee Ball) Schematic?

NeP

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I recently found myself with a non-working Norton High Ball (this one), and am looking for some advice for repair. When I pulled out the transforner assembly I found some evidence of a previous repair job, but without the schematic I'm not sure how it should be fixed.

There is almost nothing to this board - it basically rectifies the 25VAC from the transformer, and distributes it to some connectors for the sound and light boards. There are also 2 solid-state relays that would presumably control the ball release and the ticket dispenser.

In this picture, I drew in pink where the diodes are. But the one shown in green was cracked, and split in two when I touched it. But since it was in parallel with the one above it, I'm not sure if it was cracked and hence repaired (without removing the original), or if someone tried to fix it but hooked them up wrong.

A full-wave rectifier would need 4 diodes, but installing them like they were previously wouldn't be right. But a half-wave would only need two, so why the extra? Does anyone have any leads to a schematic, or possibly some advice on what to try?
 

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Did you get a response to your post outside of this forum? I have photos of the logic board and am happy to share (below).

As it happens, my Norton High Ball has decided to stop counting. I'm not sure what's wrong with the board - I don't see any broken circuits nor any obviously damaged components - but it won't count the value of each ball played. Everything else works, though: when a ball passes the switches, it plays the appropriate sounds. It just doesn't keep score. (And it's not that the score display is bad; when I have it score more than the award threshold, it won't play that sound nor illuminate the rotating light. Any thoughts, anyone?

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