Hi there!
I got a Gay 90's which I am working on.
Managed to have everything running apart from 3 issues, 2 of which seem related.

Issue 1: When starting a game the outhole is trying to push the basll in game, but lacking the power to do so. Checked outhole relay, seem fine (contact cleaned and spaces ok); checked motor cam 3A, cleaned it, etc: Also checked the hole advance unit which seems ok.

Issue 2: seem related to issue 1: Eject coil (right scoop) is not triggering when the switch is hit, relay "eject" is activated. If I press both the "out hole" and "eject" relays, then the coil activates. Eject relay has been checked, cleaned etc

Issue 3: SOLVED game is alway on 4 players, even when pressing Start only once. Game is advancing through balls as it should.

Many thanks in advance to help me diagnose those so that this Gay can leave my closet and play again with its friends!

Hi dr,

So :
Issue 1: Common is bottom left and marked "C" correct? Then absolutely no reaction. Mechanical problem seems unlikely, I have thoroughly cleaned it and it move just fine by hand.

Issue 2: I had checked 3A as stated in the first post No change Also checked 5B => same... weird to have the same issue on the same day

Issue 3: solved; "spider" lugs on back of the coin relay were not making good contact.

Down to 2!

I do have a score card but it's in german If you want it PM me your mail, I'll scan it.

1- done, coil fires perfectly then!

2- yep it does. And if there is a bonus like 200, the relay stays energetised till the countdown is done, but no coil action.

Curriedog: issue 1: M/B on the hole advance unit was the culprit! Both issues solved at once!

Will do more tests tomorrow to be sure the game is done, but thanks a lot to both nevertheless!

Ok, there is one issue which appeared (it was working before) : the right gate
it energetizes, but does not stay energetised. Did not find in the schematics what is making it stay open, only found the line where it closes.

Many thanks in advance!

Solved on my own by reading the schematics more carefully.
Through switch was open instead of normally closed

One more is alive!

Dr nybble was right on it! Saw it after the solve :-p