When the ball goes in the pit it is not registering. I'm wondering if the contact that goes around the black kicker part is not being pushed down enough.
It seems that the kicker may not be sitting properly. Not sure
Has anyone had this problem? What did you do?

I have a weird problem. After a while the pit will not eject the ball up.
I know the machine knows its there because after a while it counts down (hurry up and flip) so I don't think its the switch in the vuk.
It just sits there and you have to turn the machine off. Turning it on again later usually fixes it.

Any ideas anyone? I thought maybe the driver transistor but it works initially.