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**Reel Slots** Gaming Machines => SIGMA Reel Games => Topic started by: Chris-socal on June 22, 2022, 09:01:07 PM

Title: Sigma I3213 Winners Choice
Post by: Chris-socal on June 22, 2022, 09:01:07 PM
Hi friends
I acquired a Sigma 3-reel that is certainly a project machine!  Someone didn’t take time to look up the correct way to drill open a slot machine and drilled all 3 key switches before drilling the door lock. Nevertheless its bones look good. All 3 Power supplies are completely dead which is suspicious but I will work through that. What I need help with is identifying which of the 3 switches the 6 wires goes to. Does anyone have one of these intact? Each of the wires has a tag 0,1,2,3,4,5. Is it safe to assume they are sequentially paired?

Thanks for any help.

Chris
Title: Re: Sigma I3213 Winners Choice
Post by: Tom1969 on June 22, 2022, 11:37:08 PM
Hi Chris,

in attachment part of the schematics…you can see the keyswitches…

Hope that helps…

Tom
Title: Re: Sigma I3213 Winners Choice
Post by: Chris-socal on June 23, 2022, 05:40:12 AM
 Thank you very much.
Title: Re: Sigma I3213 Winners Choice
Post by: Chris-socal on June 23, 2022, 02:21:45 PM
Do you know if these are momentary switches or on/off.
Title: Re: Sigma I3213 Winners Choice
Post by: Tom1969 on June 23, 2022, 10:05:12 PM
On/off
Title: Re: Sigma I3213 Winners Choice
Post by: Chris-socal on July 08, 2022, 07:02:57 PM
The machine is coming along nicely.
I originally thought I would do the bare minimum and sell the machine as “ugly but it works”. The glass was badly stained and looked ruined. The machine was essentially out of order. I suspect the machine was stored outside or had something sticky spilled all over it. Amazingly, the main board was unscathed.

Game showed no signs of life upon power on. 1 Fluorescent light worked making it a lighted paper weight!

I removed the power supply tray on ceiling of machine and identified all 3 PS units had blown fuses. Upon opening the units it was clear the capacitors were either leaking or saturated in whatever the sticky substance was covering the rest of the machine. Multiple traces on all 3 PS units were corroded and not worth repairing…yet.

Using PC power supply (5v & 12v) and bench PS for 24v I was able to power the machine and get RAM Wrong error.
Replaced backup capacitor with 3.6v NiMh. Game booted right up. Now its worth something.

Got Hopper jam err. . Found someone had bent the knife...in truth it was mangled.  Quarters were wedging instead of passing through the switch. Fixed the bend in the knife and sanded it to replicate a more original curve. Hopper works perfectly now.

Previous owner drilled out all 3 switches so I replaced with push buttons.

Ordered 3 replacement SPS units from China. $36 for all 3 including shipping.

Fixed fluorescent starter contacts, all bulbs now work.

Pulled glass panels and found out they aren’t printed glass, they are translites sandwiched between 2 glass panels, sticky fluid soaked in. Soaked in tub with mild soap and peeled them apart. Miraculously all of the sticky stains washed off. Touched up minor peeling with acrylic paint. Advice: never use ammonia based cleaner, especially on glass.

Received SPS units 6 days early (how do they do that?). Replaced all 3 switching power supplies. (5, 12, 24).

Pulled and cleaned exhaust fan.
Vacuumed and cleaned inside of machine.
Cleaned outside of machine.
Steel wool to remove rusty spots on chrome
Cleaned reels
Pulled button caps because most were sticking. All are damaged. Found most were sticking because the plastic edges were cracked off and wedged inside.Removed broken pieces. They are not pretty but they work.

Before pics attached.
After pics coming.



Title: Re: Sigma I3213 Winners Choice
Post by: Chris-socal on July 09, 2022, 09:56:02 PM
Some pics of the machine all cleaned up.
Title: Re: Sigma I3213 Winners Choice
Post by: kanneman on September 03, 2023, 05:53:13 PM
Thank you for posting this, I will be starting my renovation an exactly the same model soon  :thank_you:
Title: Re: Sigma I3213 Winners Choice
Post by: Chris-socal on September 03, 2023, 06:40:12 PM
I hope some of my ramblings help you out. I really liked working on that machine.
Post pics of yours when you have time.
Title: Re: Sigma I3213 Winners Choice
Post by: kanneman on October 03, 2023, 06:59:09 PM
I hope some of my ramblings help you out. I really liked working on that machine.
Post pics of yours when you have time.

I will post pics once I get started
Do you have a manual or do you know where I can find a manual?
Title: Re: Sigma I3213 Winners Choice
Post by: Chris-socal on October 03, 2023, 07:31:43 PM
Take a look at the NLG file system. If I recall the documents for SG150 were the closest match. However, once I got power and coin mech working I didn’t need to do anything else.
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