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MYX:
I got my black knight working. This is an Build your own arcade forum and pins were in arcades. (too many liberties? ;D)
Anyway, what is wrong?

Popcorrin:
The problem I was having was with a Playboy 35th anniversary pinball machine(made by Data East).

Everything was working fine at first but now the bumpers do not work.   From my limited knowledge I understand that when the ball hits the bumper it closes the contact on a leaf switch which sends a signal to the cpu board which in turn tells the coil to fire.  The coils have a power line running to them which I am guessing is always hot and the control line on the coil goes to the cpu board. 

Since all five of the bumper coils aren't working I thought maybe it had something to do with power wire going to these coils, but I really don't have a clue and I was looking for some advice.

Thanks

MYX:
Do you have a multimeter? Check your fuses. I finally made this my first check point. I kept checking boards and it almost always came down to a fuse. 

mahuti:
With a problem like that, I'm sure going to the Marvin3m site will get you going in no time.

MYX:
No doubt. Marvins site was a God send. I have a 2 inch binder at the house that is a encyclopedia of system 7 workings.

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