(Topic ID: 320883)

Help needed - alpha numeric display issue

By gac

1 year ago



Topic Stats

  • 5 posts
  • 2 Pinsiders participating
  • Latest reply 1 year ago by gac
  • No one calls this topic a favorite

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#1 1 year ago

Help needed! - My recently acquired Pinbot has an issue with the "n" segment (per the manual) in each of the seven display digits on both alphanumeric display panels. The "n" segment does not light up in any of the 7 digits on either panel. So, for example, the letter "R" always displays as "P", no matter which unit of either 7-digit display it is in. Similarly, a "K", "N", "W", or "X" will not display this segment either. Any thoughts as to the cause and how to repair? Thanks in advance to all.

#2 1 year ago

Step 1 is to reseat the ribbon that connects the MPU board to the display panel.
Was this an issue before you brought the game home?
--
Chris Hibler - CARGPB #31
http://www.ChrisHiblerPinball.com/Contact
https://www.youtube.com/c/ChrisHiblerPinball
http://www.PinWiki.com - The Place to go for Pinball Repair Info

#3 1 year ago

Hi Chris - I did try reseating the cables and even swapped ends from the CPU to the display board. No change. And yes, it was an issue before I brought it home. Thanks for reaching out.

#4 1 year ago

In that case, I’d say that the display panel has a failed component on it. Usually, that is a 4050 (IIRC) or one of the HV chips.

I’d have to review the schematics to provide more precise info. Definitely repairable.

Chris Hibler - CARGPB #31
Http://chrishiblerpinball.com/contact
http://www.PinWiki.com/ - The new place for pinball repair info

#5 1 year ago
Quoted from ChrisHibler:

In that case, I’d say that the display panel has a failed component on it. Usually, that is a 4050 (IIRC) or one of the HV chips.
I’d have to review the schematics to provide more precise info. Definitely repairable.

Chris Hibler - CARGPB #31
Http://chrishiblerpinball.com/contact
http://www.PinWiki.com/ - The new place for pinball repair info

Hi Chris - sending a PM. Thanks

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