Did you clean the connector that comes off the coin door? If you haven't, I would replace those Bally fuse holders for reliability. I restored a Captain Fantastic and would randomly lose GI until I replaced the actual holder.

Check your lock relay

The lock RE, turns on the GI lights, but not the coin door lights. So reading the OP post, you now have PF GI lights? No coin door lights?
I’m using a different schematic, but this should be the same. There are two fuses for GI lights; the coin door fuse has yellow/Black wire one side and Red/Black wire the other side. If the Number of player light or the game over light is working, we can assume the fuse is OK. The next thing to check is the Door plug, over time they stop making contact, try pushing the contact of the Red/black wire (top left wire). With your finger squeeze the underside of the plug. Still not working, unplug and check for continuity, with your DMM set to Ohms, find the Red/black wire (top left wire) and Yellow (3rd from top left wire) on the male plug you should read near 0. If this is ok, check from the R/b wire of the female socket to the R/b wire on the fuse, looking for continuity.

SAFETY TIP – one of the fuses is connected to Mains power, turn off and unplug the machine from the wall while using you DMM, just in case!!

Chris,
I was going after flipper switch not lighting gi.

I agree 100% with your coin door assesment

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Jeff, in no way was I knocking you; you’re good at this stuff. My thought was the coin door is easy. If we fix this then we have a good starting point for the rest of the GI lights, if still required

might sound a little too simplistic - but make sure the lamps are good
when going through a game sometimes they blow ?

Mukieluk, I think i might be confused as to what the current issue is. Is it the Coindoor lights or the flipper button activating GI lights or both?

I really wich i had the schematic to look at

{EDIT} I think this schematic is too late for this problem. Knockout used the left flipper for GI CF came on immediately with GI

No worries Chris we are both in it for the fix

I just read this bit on the 3rd post, sounds like the fuse or fuse holder. As the door and Back box, are the same fuse, at least on my schematic.

By contrast here is a Hokus Pokus circuit which is a year earlier 1975 and i think is closer to the knockout as GI are controlled by the lock relay and the fuse for the coin door lights is like Chris described

hokus.JPG

I think this a better one. notice the wire colour change in the 1976 around the fuse.

Bed time 10:30 PM for me, night all

Jeff if you are looking for a great quality Schematic, Bally Wizard is very good and also 1975
http://www.ipdb.org/machine.cgi?id=2803
Now I’m off