(Topic ID: 167235)

Grounding Point-System 80B 20 Alpha Numeric display Board?


By BleacherBum

3 years ago



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  • 5 posts
  • 3 Pinsiders participating
  • Latest reply 3 years ago by BleacherBum
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#1 3 years ago

Probably a stupid question, but can anyone show me the grounding point for a Gottlieb System 80B alpha numeric display board (20 characters-MA644)? I have added grounds to all of the other boards, but due to my deficiency in reading schematics, I am not sure where to attach a ground. I haven’t found an answer on PInwilki or other internet sites. Do people ground the display? If so, can anyone can share/suggest the location to attach a ground to the display?

Thanks,
Phil

#2 3 years ago

In research and dealing with upgrades to my two system 80B games (Genesis & TX Sector) there was no indication or recommendation of display ground mod that I am aware of. A repeat concern or suggestions I saw regarding the display was ribbon cable and circuit board condition and connection.

#3 3 years ago

Thank you rgb635 for your reply , I glad you had the same results that I have had when searching for information on grounding the boards including the display board. I was afraid that I was overlooking something obvious.

#4 3 years ago

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Use something that attaches to P19 of the connector.

Ground is all the points with the same symbol. Pick an easy access one.

#5 3 years ago

Thanks Farakandl. This is helpful.

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