I am truly stuck. I'm working on a #Jacks Open, and it's running great. All functions are working like they should, except the match.
I have been chasing this for a few days now, so I'm asking the assembled brain trust for help.
The Score Motor 1D switch checks out good.
The make/break on the W relay is good. The FS relay is working crisply, as is the AX relay.
The tens score reel contacts are good, and the score reel advances cleanly. All scoring is correct.
The knocker hits and the credit unit indexes when you reach the free game score thresholds.
The credit unit decrements when you start a game, if there are credits showing. I do have it on free play.
The O relay advances the ball count through to Game Over.
Thanks in advance for all your help!
Jim

HowardR , I'm on it. I'll report back.
Thank you.
Jim

@HowardR, attached is a map of the jumpers I have installed and tested.
No change with any of them.
I'm missing something simple, but I've stared at it too long, and can't think with a fresh perspective.
I hope you can point me in the right direction. THANKS!
Jim

Inkedsch JO (resized).jpg

You're exactly right, I am assuming it's only one problem. Mostly because I have self-induced tunnel vision on this problem.
I'll jump as you suggest and report back. Your approach splits the circuit in two, which makes a lot of sense.
Thanks!
Jim

HowardR , I jumped as you recommended, and no change. No match.
The way I'm checking this is I cycle the machine through to end of game, and I see the match number. I back the ball count up to Ball 5, set the tens score reel to the match number, the cycle the ball count unit to end of game to see if the match engages. I hope this isn't part of the problem!
Jim

Thinking about this some more.
It looks like the trouble is between the tens score reel and the FS relay.
If the tens score reel was the issue, wouldn't it give trouble collecting and advancing score?
That leaves the FS relay.
I can manually advance it after game over, and see the progression of the match lights from 00 to 90. I have conductivity from the moving contact to the board, and from the board to the connector tabs.
I'm testing something incorrectly, I think, but don't know what. I'm missing something that will be obvious when found.
HowardR I hope you can learn me something!
Jim

Yes, I did jump as you posted in #5. I saw no change, as I said in post #7. Sorry I wasn't clear.
Jim

Thanks for the tip! I'll check that today!
Jim

@howardr, I went through the tens unit, all solders are good and isolated from each other. I jumped from the red wire on the 6th position ball count switch to the Gr-Blk wire on 30 on the tens reel (where the match number and the tens reel are both sitting), no change. I went to the FS relay, confirmed continuity from the tens reel to the FS on all tens numbers on both sides of the relay, all good. Jumped from the 6th position switch to either side of the FS relay at the 30 position, no change.
I'm drawing a blank.
Jim

@pinballdaveh, I followed your suggestions.
Jumper from red wire to Y-G on the C lug. KNOCKER FIRES
Red wire to inner trace on wiper board. KNOCKER FIRES
In both instances, when the knocker fired, the credit relay incremented up one.
Still no knocker without the jumper.
Jim

@pinballdaveh, I went through all ten positions, and the same result all the way through. Looks like the wiper is making good contact all the way around the board.
@yeoldpinplayer, No it doesn't match if it's not on free play. Same behavior as on free play. That makes sense. If the credit wheel shows games, it's the same as free play.
I did start backing up the circuit, jumping from the Y-Gr wire to the other side of the 6th position switch, then the other side of the zero position switch, then the top side (looking at the schematic) of the H relay. When closed, I get the knocker.
I got pulled away for a while, and now it's dinner time. I'll keep backing up the circuit, jumping from the Y-Gr to the next section. Score motor 1A next.
Jim

@howardr, thanks for your advice, and I'm going to go through the circuit once again, but this time to eliminate one switch/device at a time. I'll be jumpering from the Y-Gr to an ever shorter path each test. Hopefullly I'll find this thing!
Jim

Thanks to your sage advice.
I have backed up the circuit to the O relay, and can't get past there. Open.
I'm going in!
Jim

Thank you, I marked it resolved (didn't know that was an option!). Post #5 was the turning point for me.
Jim