Bench Testing Lightning Skeeball

Joedirt622

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Trying to find what is wrong with this machine. Boots up, makes the sounds and will play through a game with no display ( just by flipping switches, no ball release hooked up yet )... I cannot find a manual for this game. So far I think it's a 1ne. Is there a way to bench test this? Or if someone has a close manual to help me?
I have d28 led on. D30 and d31 are off ( believe they are from outside switching )
Transformer tests good, just really ruff without a diagram...
 

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