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**Reel Slots** Gaming Machines => Universal Reel/Video Games => Topic started by: RevAtom on March 02, 2021, 10:03:28 PM

Title: Universal 8116 A2 coin comparitor issue
Post by: RevAtom on March 02, 2021, 10:03:28 PM

My first slot machine, I may have bit off more Han I can chew lol but I plan on saving this relic as it was from the Sands and I feel that it’s a part of history.
I have several problems that I’m going to tackle one at a time. I have error codes if 13 and 50. My door mechanism was in pieces when I brought it home so I will get to that later. My first priority is getting coins to go in and out. I just got a hopper off eBay for quarters. I don’t know how to test it, it doesn’t turn when I power on. That would be my 2nd issue.
The big I e is that I am trying to get the comparitor to work, I don’t know how to test it or tell if it even powers on. There is one green wire that is not plugged in.....should I plug it in?

Title: Re: Universal 8116 A2 coin comparitor issue
Post by: Sunrise Side on March 03, 2021, 09:33:27 AM

Can you post a picture of the machine?

Title: Re: Universal 8116 A2 coin comparitor issue
Post by: RevAtom on March 03, 2021, 10:29:34 AM

Absolutely, thanks for any help!

Title: Re: Universal 8116 A2 coin comparitor issue
Post by: RevAtom on March 04, 2021, 09:36:01 PM

I pulled out the white plug and put some electrical tape on the door sensors and the red light on the comparitor lights up....I’m still unsure about that green wire.

Title: Re: Universal 8116 A2 coin comparitor issue
Post by: Sunrise Side on March 05, 2021, 07:23:49 AM

I see there is a toggle switch on the inside of door near the comparitor. Did you try turning it to the opposite position to see if it changes anything? I will have to see what the pinout is on my machines comparitor. Your pictures are small and dark . Can you post better pics?

Title: Re: Universal 8116 A2 coin comparitor issue
Post by: Sunrise Side on March 05, 2021, 07:26:10 AM

Check with member RobinAK . Maybe he can post a picture of his wiring. He is currently working on a Universal

Title: Re: Universal 8116 A2 coin comparitor issue
Post by: Sunrise Side on March 06, 2021, 06:15:37 PM

I looked at the wiring on my machine and it has only 2 wires connected to the comparitor.  Blue wire at the bottom 6th pin connection and a Purple connected at the 4th pin down.

Title: Re: Universal 8116 A2 coin comparitor issue
Post by: RevAtom on March 06, 2021, 10:57:03 PM

I THINK I got it working.....a combination of pulling the white buttons out, taping the door optics and flipping a weird switch on the inside of the door powered it up....I was stumped so I just started pushing buttons out of frustration lol.


Turns out it was a toggle switch on the inside of the door I’ve never seen one before and I still have no idea why it’s there.....