(Topic ID: 202713)

Coin Door Coil


By mcbPalisade

10 months ago



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  • 12 posts
  • 9 Pinsiders participating
  • Latest reply 9 months ago by xsvtoys
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Coin Door Coil (resized).jpg

#1 10 months ago

Williams Blue Chip coin door coil.

I'm trying to get this machine 100% and am looking at the one coin acceptor.

I think I've got the mechs working OK but have traced the machine not taking coins to the fact that this small coil isn't energized.

Can you enlighten me about what it is for, how it works and how to get it energized? Thanks

Coin Door Coil (resized).jpg

#2 10 months ago

It's the coin relay. According to the manual at IPDB (page 8 of 32 in the .pdf) "coin relay is energized at score motor index cam switch C, thru switch on coin relay, game relay, zero switch on credit unit, and credit button switch."
http://ipdb.org/search.pl?any=blue+chip&search=Search+Database&searchtype=quick#325

#3 10 months ago

Oh, so the game still has plays on it, maybe you can't buy in until it reads 0.

Not like the new fangled games

#4 10 months ago

Your picture is of the Coin Lockout coil, not the Coin relay. It's purpose is to prevent coins from being eaten when they won't add plays because eaten coins result in game abuse.

#5 10 months ago
Quoted from mcbPalisade:

Oh, so the game still has plays on it, maybe you can't buy in until it reads 0.
Not like the new fangled games

I would call that one the Coin Lockout Relay. There are no switches on that relay, it is connected to a metal bar that goes across over to the coin units. When it is not energized that bar will be in such a position that coins will fall through and come back out the coin return. Thus, in a paying environment if the power is off and someone walks up and drops a coin in, it will fall right back out and they won't lose it. When it is energized, it pulls that bar over and then the coins will be taken and give a credit.

Since that one relay is on all the time that power is on, it gets toasty and can burn up. If it is not energized, you get the exact symptom your describe. I think on most home machines it is disconnected and kept off. You can then manually slide that bar over to the position to allow the coins to be accepted.

EDIT - beaten by Howard

#6 10 months ago

The little spring holds it so you can't just disconnect it but you can wrap a rubber band around the coil and bracket to "fix" it.

#7 10 months ago

The coin lockout coil is de-energized when there are credits showing on the credit wheel. When it's down to zero credits, then the coil will energize to accept coins.

#8 10 months ago

These door relays burn up alot and i generally disconnect them.

3 weeks later
#9 9 months ago
Quoted from KenLayton:

The coin lockout coil is de-energized when there are credits showing on the credit wheel. When it's down to zero credits, then the coil will energize to accept coins.

I thought it de-energizes when you have reached maxium credits to prevent coins going thru to the cash box which can't add credits?

#10 9 months ago
Quoted from Pinslot:

I thought it de-energizes when you have reached maxium credits to prevent coins going thru to the cash box which can't add credits?

Me too, when max credits are on the wheel, or when the power is off. It should let you buy more than one credit otherwise and not just lock out when more than zero. Unless single player games were like that but I don't think so...

#11 9 months ago
Quoted from Pinslot:

I thought it de-energizes when you have reached maximum credits to prevent coins going thru to the cash box which can't add credits?

That's the way it *used* to be. Starting around 1975, Williams changed the circuitry on single player machines to de-energize the coin lockout coil when *any* credits were on the machine. Even some of the EM arcade machines like Ringer are the same way. My buddy Welby Bergum has a Ringer set to 2 plays for a quarter. If any credits are on the machine, you can't put any coins in. The credit meter has to be on zero credits before coins can be accepted.

#12 9 months ago

That would make sense. I only have the 2 Bally EMs of similar vintage, Bon Voyage and Monte Carlo. They probably figured it was unlikely that the credit meter would ever get maxed out at 25. Looking at those schematics, there is no other logic for the lockout coil, it is always on when the machine is on (thus accepting coins).

EXCEPT:

It is in series with a score motor switch 1B, which means it will be briefly de-energized while the score motor is turning. My presumption is that this is done so it will return a coin that has been shoved in during the time the machine is working on the reset procedure because that one would not be able to register a credit during that time.

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