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Author Topic: Universal jackpot 7s - handle not working  (Read 1440 times)

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Offline Inetjnky

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Re: Universal jackpot 7s - handle not working
« Reply #40 on: May 19, 2017, 08:02:06 PM »
Tested again with my meter.  At rest it was reading 26.32vac.  When I dropped a coin it went to 26.26vac. i did the test twice and the second time it went from 26.32 vac to 26.29vac.  Not sure what I am to expect to see on the meter?


Pulled the power supply for pictures.

Notice the two pin brown plug that's not plugged into the board below it.  Should it be?


20k201u, is that the noise filter?

« Last Edit: May 19, 2017, 08:37:35 PM by Inetjnky »

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Re: Universal jackpot 7s - handle not working
« Reply #41 on: May 19, 2017, 09:09:32 PM »

Not sure what that little connector is for. The black noise filter has been bypassed, GOOD! Saves you doing it later as they always fail and are not needed. Tower-4 board is there.
If you have 26 Vac (close enough to 24Vac) on the wires then the solenoid is bad as it should be pulling in the release. You are probably seeing voltage before dropping the coin because it was set before.
Power supply looks good.

Offline Inetjnky

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Re: Universal jackpot 7s - handle not working
« Reply #42 on: May 19, 2017, 09:30:03 PM »
Ok, so a few questions...


1) where can I get replacement bulbs for both the upper and lower glass as well as the buttons and other small bulbs?  I have a few that are out.  Also looks like the lower tombstones that the fluorescent bulb plugs into are shot.  Any idea where I can get ones to replace these?  Anyway to test the lamp drivers?

2). Where can I find a replacement solenoid?  I ran test #5 on the machine and when it ran test 5/137 for the handle solenoid, it pulled the solenoid in and activated the handle.  Seems the solenoid is fine based on this test?  Would the board in the power supply still produce this result during the test if the board was bad?  It still doesn't activate the solenoid when dropping a coin or using a credit.

3). What is the bell for on the back of the top box?  Should I leave it disconnected?  The wires come down from the tower lamp so I'm guessing on a jackpot it would activate the bell?

4). How can we diagnose the hum of the reels?  Video to hear noise here...
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« Last Edit: May 19, 2017, 11:22:58 PM by Inetjnky »

Offline Inetjnky

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Re: Universal jackpot 7s - handle not working
« Reply #43 on: May 19, 2017, 10:14:29 PM »
5) any idea where I might find the silver trim for the top glass?  I just noticed that 3/4 of the one on the right isn't missing.




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Re: Universal jackpot 7s - handle not working
« Reply #44 on: May 21, 2017, 06:50:27 PM »

Ok, your solenoid works when tested but does not when played. Then the solenoid is good, your Tower-4 board is good. The top handle optic is the problem. Could be the optic or could be the violet wire from the optic to the mpu board. You can swap it with a lower handle optic and see if the solenoid pulls in. (Handle still shouldn't work)
If the solenoid pulls in with different optic then the violet wire has good connection and you confirm optic is bad. If solenoid still does not pull in then the violet wire is the problem.


The optics send a HI/LO signal. The mpu must see that top optic (by the solenoid) in order to activate it. Even if it lights it may still have a problem sending both HI/LO signals.


The reels are old Universal reels. The noise they make is pretty much normal. A little loud but I've seen this many times. The fluorescent bulbs should be found at Home Depot. The wedge bulbs can be bought online. I have seen several different sizes with C657 the most used. Believe they are 28Vdc. Fluorescent bulb sockets you most likely need to rig something from an old light unit.
I'll dig a little deeper on the bell wiring. Seems like I remember they were connected to the hopper. Try plugging it in and cashout your credits and see when the hopper runs the bell should ring. Bells are not often used for home use as they get annoying.


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Re: Universal jackpot 7s - handle not working
« Reply #45 on: May 21, 2017, 10:10:05 PM »
Swapped the optic and the solenoid isn't pulling in.  Guess I'll find some time this coming weekend to trace out the violet wire and see what I can locate.  Thanks for your help in getting to the bottom of this.


Bummer on the reel noise...


Thanks for the info on the bulbs, the Floresents both work (test by putting bottom in top where top is working and it lights up, just not on the bottom.  It did work when I first bought the machine but stopped.  Rotating the bulb got it to light up slightly but then after removal stopped working after I inserted a known good bulb.  I'll see if I can track down some old tombstones.


The bell is more of a curiosity need a must get working.  I was actually thinking of taking it out and wiring it up to my house door bell.  Cash out on credits doesn't produce any sound.  Pressing the change button produces no sound.  Running test #5 produces no bell sound. 


Perhaps the bell isn't meant to work since it seems I have a Frankenslot (machine of various parts all put together to make a working machine?)


One other question... the coin comparitor.. what's the largest denomination you can use in it?  Will it accept the new $1 coins?

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Re: Universal jackpot 7s - handle not working
« Reply #46 on: May 22, 2017, 04:16:00 PM »
If you were to change coin size you need to change several pieces in the hopper. So the coin comparator should except up to a dollar token but then the hopper would need at a minimum a new wheel, and knife, and other parts I can't even remember. Good luck finding these parts, better off looking for a complete dollar hopper.

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Re: Universal jackpot 7s - handle not working
« Reply #47 on: May 22, 2017, 06:53:43 PM »
Not going to change, was just curious.  Thank you.

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Re: Universal jackpot 7s - handle not working
« Reply #48 on: May 23, 2017, 04:28:26 PM »

Oh, and I forgot the coin head on the door where you drop coins in too. Would need a bigger one if that one is for nickels.


The CC-16 should go up to $1 tokens, after that there is a wide body CC-16 that takes $5 tokens and up. There is also a wide body coin entry system from Universal that holds the wide body CC16.


Another note on your handle problem. No doubt now the upper handle optic signal is the problem or it could be the mpu board has a problem receiving and processing it.
Those three optics all go to the mpu. If I unplug my top optic on my machine the solenoid does not engage when a coin is entered but will in test #5, like yours. The mpu sees the optics and energizes the solenoid when all three are off. The mpu sends the signal to the Tower-4 board that energizes the relay to power the solenoid.
What you can do, with power off to machine, is pull the mpu board. In the back there are two edge connectors, a top one and bottom one. That violet wire lands on the top edge connector, left side, 10th pin down from the top. In your manual there should be a wiring schematic showing it, not sure which page. Anyways, if you set your meter to ohms and put one lead on the violet wire on the optic connector and the other lead on the edge connector, top, 10th down on the left, you should see continuity (the ohm meter moves to the right) telling you the wire is getting there, or nothing telling you the wire has a break. 


One other thing I have seen before. Behind that mpu frame with the edge connectors, sometimes screws can fall back there and can cause shorts. Unscrew the mpu frame and just pull it away take a look. Make sure no screws or quarters stuck back there.

Offline Inetjnky

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Re: Universal jackpot 7s - handle not working
« Reply #49 on: May 23, 2017, 06:52:12 PM »
The mpu is the motherboard with the eproms and sound chip right?  If so I know there are no screws or quarters because I took it all apart to replace the battery on the board.  If you are referencing a different board please let me know.  I'll have to take it out to test.

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Re: Universal jackpot 7s - handle not working
« Reply #50 on: May 24, 2017, 04:05:05 PM »

Yes that is the mpu with battery, chips, etc.
No, that is not what I'm referring to. I'm talking about where the mpu (in the case it is mounted in) attaches to the machine. Where you slide that case in has two edge connectors in the back. Behind those edge connectors are all the wires. That is where junk can get caught.

 

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