I'm currently working on a "Hurdy Gurdy" that I'm planning on bringing to the Saratoga show next weekend. One of the issues it had was a fried alternating unit coil. I replaced the coil, but noticed something I thought was odd. It seems that the coil is energized on even numbers on the one point score reel, and it's turned off on odd numbers. OK, but here's the weird part. If the game ends on an even number, the coil remains energized even in "game over". Somehow, that doesn't seem right. I would think that the coil would eventually overheat, even though it's a somewhat continuous duty coil as is the hold relay coil.
I was looking for a schematic, which I could have sworn I had, but couldn't find it. I looked at both a "Subway" and a "Square Head" schematic which I imagine would be similar. I pretty much went through every switch in the game, and could not find anything abnormal that would make the coil stay on.
Are there any "Hurdy Gurdy" owners out there that can check their game to see if this is in fact normal? I'm going to be getting a schematic, but would hopefully like to have this resolved quickly as I'm running out of time to get this game ready for the show. The rest of the game does normally de-energize in "game over"
via the center switch of the three stacked in the back of the ball count unit. The game had a two-play/coin modification done on it, but I undid everything and was hoping that would fix it, but it did not.
This one has me stumped, but maybe it's normal?

Yeah, add-a-balls are a totally different animal with no game over relay.
I didn’t see any evidence of wiring hacks other than the mod which I undid.
Looking at the schematics for the other two games again, I'm thinking this is normal. If so, I'll have to call Wayne Neyens and give him a little heck about it! Seems like a bad design.

I was getting the feeling that I was dealing with a non-issue. Thanks for checking yours.

I did some creative engineering and added an additional switch to the ball count unit which opens and de-energizes the alternating unit relay at game over.
This should help keep the coil healthy and allow it to cool when the game is idle.

The YouTube videos I've seen seem to corroborate the fact that it's normal operation for the alternating relay to stay on if the score ends with an even number. One video shows a game where the alternator appears to be inoperational. I think my modification will prolong the life of the coil.
If anyone wants to know how I did it, send me a pm.