Getting more and more into my World Fair now that its working. I have been cleaning it up and trying to learn the rules of the game. Just came to the realization a few days ago that when the disc in the middle spins it is supposed to award you a rollover spot. Mine was not doing this, did some digging and realized I was missing a disc under the spinning disc mech that had been removed and was luckily put in the coin box, its in the first pic below, all it has is one switch with a spring around it. So I replaced it, but I am still not getting the spot rollover when it spins during the game.

However, there is a feature you can choose for the machine where at the start of the game you get a spot rollover for whatever number the disc is already on, and it does award that, just not during the game when you hit a bumper and spin it. Checked the two "spot award and spin" I believe they were J and K relays and the swicthes all were fine according to schematics. So I am a little stumped. I also turned that feature that gives it to you at start of game off by switching the little plug and it turns off, and worked again when I replaced the plug.

So to reiterate.

At game start you are spotted for whatever number the spinning disc is already on.

Once you start to play and you spin the disc it no longer rewards you the spot.

Once you start a new game it will do the same thing.

It seems like this means that the switch registers right? Can someone with a World Fair check something for me, see the pic below. In the first one you can see how the little switch lands, is it supposed to land between the two contacts, or on just one of them? How much back and forth play does your disc wiggle? Mine wiggles a little, sometimes after the disc rotates the little switch with the spring on it does not make good contact with those rivets. Also in the second pic, am I missing something here, the switch comes through this bakelite and then through a wire goes to that screw then goes back through another wire back to the switch, it kinda just makes a loop. Correct me if I am wrong as I am still learning, but to me that indicates the switch should be between both contacts so it acts as a link between them. Last picture may not be needed but I am including it as a better pair of eyes or someone that has this machine may see something different than mine.

Lastly, is there a way that this feature may have been turned off because it would be considered gambling as it leaves it up to chance? Is there a plug I am missing that lets you choose that?

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Morning bump.

Thanks cash!

Good to know, that is interesting, it only has the one shoe, but when the disc lands in rotation the shoe basically has those two rivets to choose from. I wonder if its supposed to hit one then the other in sequence for each rotation. I will play with this more. I will try and clean the show a little more so it has a nice up and down action.

I did clean them with the alcohol already and they did look pretty clean already but figured it could not hurt. I had no lube though so may try that if all else fails.

Thanks a bunch! I hope others chime in as well. I know its not a game a ton of people have.

Thank you for the pics! I unfortunately cant see where the shoe lands. You could probably just take a look and tell me at this point. Basically from what I understand as far as Cash said above, when the disc rotates it will land on one of two rivets, either the left or the right and not in between. Can you take a closer look and tell me which rivet the shoe lands on? Heres my pic again with awesome clarification included by me.

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Thanks Philly, I will fool with mine more tonight.

Good point. this would serve two functions, turning the rollerover lane off and then lighting the corresponding cart on the backglass. So it may need to be in the middle after all.

I do notice on phillyguys WF that there is no room between the disc on bottom and the mech, so maybe I need to make sure that its all the way up, previously I was giving it some space so things were not grinding against each other. see mine in the first compared to his in the second, I will tighten this space up tonight and report back.

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Not home yet, but great point on testing continuity between rivets with game off. Thanks again I will report back.

No luck yet, I moved the bakelite disc with the shoe all the way in, but no luck. I am beginning to think that my whole mech is just too loose and that after it rotates the show is not resting on the contacts properly.

Philly guy, will you check with the machine off and very gently if the small disc with the shoe under the playfield wiggles back and forth? Please dont force anything and damage your machine, mine moves pretty freely about a 1/4" back and forth.

Ok, mine seems to behave the exact same way.

Ok now this is interesting! so do you have the spotted rollover feature turned off on purpose? I did not know you could turn it off and on, and know nothing about a "jumper" or what that is. Maybe mine is already turned off and I just need to turn it on? Please elaborate.

As of right now when the disc spins the playfield light does not turn off, and the cart in the backglass does not turn on. The rollovers all do behave correctly if you activate them on the playfield itself, just not during the spinning disc feature.

Thanks for all of the help Phillyguy!

Ahhh I see, I do know about that. I have it turned on currently and it will award the rollover at game start if I have the disc properly centered on two grommets, after that though once the disc spins it seems to become misaligned and no longer awards them. I will switch it over tonight though and give it a shot and see if that changes anything somehow.

Does your shoe on the disc center between the two rivets after every spin? If you do not feel comfortable checking with the playfield up and the game on don't worry about it.

Have a good night at work, and thanks again.

Thanks Philly, honestly I think the whole issue at this point is how the shoe on the spinning disc does not land in the center of the rivets after every spin. I will adjust it so its right on the money, start a game and it will award me that first spot, after it spins though it will be VERY off center on the rivets, I have tweaked it back and forth countless times but cannot get it to land with any consistency. It seems to vary as to how far off it lands. If it landed say 1/4" to the right every time I could just adjust for that. I think I may need to take the whole thing apart at this point and see if something is loose, or a spring has lost its springiness, or if the gear is maybe worn.

As of right now I have a bunch of people coming over on Saturday, so I will be leaving it alone for right now. At least its playable, just getting the special will be EXTREMELY hard at this point as you would have to get each rollover at the top on each and every ball. I will be shocked if anyone does it this weekend.

I will work on it more, but with the holidays probably will be a couple of weeks.

Thank you both a ton Cash and especially Philly for taking pics and answering questions. I will report back once I start working on it again.

Happy Holidays!

reopening this:

Got a bug up my ass about this again and took another look at it. Here is the problem recapped:

The object of World Fair 64 is to light all the carts on the ferris wheel on the backglass to light a rollover for special.

I tested all rollovers, and they all work and light the corresponding cart on the backglass.

The wheel in the middle is where my problem is. During gameplay you hit one of three bumpers and spin it and whichever number it lands on it spots you the cart in the ferris wheel on the backlglass. Mine is not doing that DURING gameplay.

At the start of each game there is a setting to automatically award you whatever number cart the wheel on the playfield is already on. This is being awarded at the beginning of each game. Then on mine whenever you hit the pops and the wheel spins no other carts are awarded from the wheel.

Originally I thought this was a mechanical issue where the mech beneath the playfield was not lining up correctly and therefore not awarding the cart. But tonight I noticed that if I start a new game that the wheel will spot the award at the beginning of the game for whatever number it is on.

So why not DURING the game?

In case that was too complicated this is an example of what my game is doing.

*Game is over and wheel is on number "7"

*New game is started and you are awarded "7" on backglass as reels reset.

*game is played and any time the wheel after that turns it awards nothing.

*game ends and the wheel is on "3"

*new game begins and "3" is awarded on backlglass.

I took a close look at "J"and "K" relays which are the spin & spot relays, all the switches looked correctly adjusted, but I noticed this jumper. Is this supposed to be here? I decided to cut it and see what happened and the game would start but as soon as I hit a switch the score motor started spinning continuously and once turned off the game would not turn back on.

I soldered it back in place and the game works as it did before.

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Yeah, figured out pretty quick that it was meant to be like that. I figured the worst I could do was blow a fuse, not like I was going to blow up any boards. It's fixed.

I have the schematic but I don't know exactly what to do with it. Thanks for the info about the bridge wires though, it's good to know.

Two pics of schematics, one showing the cart lights, the other shows the "j" and "k"relays.

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Hot damn! Possible suspect sighted! Don't have the time to test or solder (I have to put my 2 and a half year old son to bed) but this looks pretty suspect! I believe this is motor 2b, a lot of labels have fallen off, but by looking at others it looks like this could be it.

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Oh the wire wasn't even attached! Driving me crazy I can't go solder it, will report back asap when I can try it.

Yeah! This baby is FIXED! Sometimes walking away for nine months pays off! Fixed in a couple of hours! Thanks dirt flipper for the nudge in the right direction. Can you possibly explain how you read the schematic and it told you to look there. I looked at it again and see it nearby but wonder exactly how you did that.

This game will be a lot a more fun with feature finally working.

Thanks everyone!

Thank you! That really does make sense when you lay it out like that. I need to find an EM guy in my area that can just sit down with me and walk me through how to read schematics.

Thanks! I will be sure to listen, wish it wasn't just audio though, I'm much more a visual person.

Thanks guys!