(Topic ID: 237978)

Williams Sys7 GI Relay Replacement


By spiroagnew

3 months ago



Topic Stats

  • 8 posts
  • 5 Pinsiders participating
  • Latest reply 71 days ago by spiroagnew
  • Topic is favorited by 2 Pinsiders

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#1 3 months ago

Does anyone know where these relays can be purchased?

Alternately, does anyone know a similar component that can be used in place of this relay?

I've got a Pharaoh whose upper playfield GI relay is pretty mangled, and only works intermittently. I've confirmed that it's the relay, and not the driving components by switching it with the lower PF relay.

Thanks in advance.

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#2 3 months ago

I was able to disassemble mine and flip the contact plate over. Might be worth a shot?

#3 3 months ago
Quoted from zacaj:

I was able to disassemble mine and flip the contact plate over. Might be worth a shot?

I'll give this a shot.

Also, I've found that GPE carries a 12VDC/40A relay in the picture below with the same terminal configuration. I can't find the original specs of what WMS used. Can someone confirm this would work?

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#4 3 months ago

From the schematics I think the relays in pharaoh run off 24V, not 12V. Unless the resistor is lowering it to 12...

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#6 3 months ago
Quoted from zacaj:

From the schematics I think the relays in pharaoh run off 24V, not 12V. Unless the resistor is lowering it to 12...

24V going to relay circuit.
There is a 100 ohm series resistor to this coil. A 12V coil itself is 103 ohms. So, yes - this resistor is used as a voltage divider and this would be a 12V relay.
The Omron relay in post # 3 is the correct part. Only difference is this one has a plastic shroud which is just a cosmetic difference.

#7 3 months ago

I think I got mine from parts express a few years ago. Work great.

4 weeks later
#8 71 days ago

Got the one listed above from GPE and it works just fine. The part was much larger than OEM, and it was a little tight fitting it onto the backside of the upper playfield...so I just swapped it with the original relay in the backbox as there was plenty of room for the larger replacement part back there.

Thanks GPE for replying and everyone else for helping out.

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