(Topic ID: 141084)

SOLVED - Gottlieb System 1 Credit Display Issue


By chrisnack

4 years ago



Topic Stats

  • 2 posts
  • 1 Pinsider participating
  • Latest reply 4 years ago by chrisnack
  • Topic is favorited by 2 Pinsiders

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#1 4 years ago

Ok, looking for some help.

I'm working on a project Joker Poker and I've got most everything running except for the credit display at this point. I have repinned several of the display connectors themselves including A5, and i've repined A1-J2 and A1-J3 completely.

I've tested a new power supply and verified i have 60v, 42v and 4v and 8v at the PS. I even pulled my pi-1/x4 from my Sinbad and tested the JP with that.

I have verified that the credit display itself is working, by testing in one of my other 2 machines.

So not sure what else to check at this point, open to ideas... I'm almost thinking i need to start checking the continuity on every wire going to the A5 display (ugh).

Thanks for any insight!

#2 4 years ago

So figured it after many hours of tracing wires and getting intimate with the System 1 schematics. Turns out some previous owner had repaired a pin in one of the A6 connectors and put it back in the wrong spot. Thankfully it ended up being a dead-end (not used on this game apparently) so nothing ever blue. Once i repined into the correct location all was good.

It was the 3v reference for the credit display, it was connected to the purple/red which dead ends at another A6 connector under the playfield. I wondered why the colors were wrong, and after tracing every single wire for the displays and checking continuity on every single wire... finally figured it out...

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