Grand Prix
Williams, 1976I have a grand prix that is finally working after some bonus countdown issues. But now I'm seeing that the top bonus hole only lights for the right bonus award. Its supposed to switch with the leaf switches behind the rubbers up top, right? Or is it tied to the slings or some other switch?
Quoted from Richthofen:I have a grand prix that is finally working after some bonus countdown issues. But now I'm seeing that the top bonus hole only lights for the right bonus award. Its supposed to switch with the leaf switches behind the rubbers up top, right? Or is it tied to the slings or some other switch?
pasted_image (resized).pngQuoted from HowardR:[quoted image]
So thats the left and right bonus arrow, not the top bonus hole light. see my image, the yellow circled lights are what I'm talking about not the bottom arrow.
On my game currently, in game over, the left lamp is lit. When I start a game, it goes to the right lamp. no switches seem to make it switch. All ball advances / outhole relay don't move it. Only thing that switches it is the game over relay.
pasted_image (resized).pngThe change relay operates from a small blade switch thats located on the match unit in between the two wiper discs. Its cam operated to open and close as the match unit advances. This is what makes the two circled lights work. Rotate it manually by hand and see if they change. If they change, then this is where your issue is. The cam is most likely not turning normally. Unfortunately a common problem with this unit.
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Denver, CO