(Topic ID: 209416)

Taxi won’t boot. All I get is power to GI

By Leosac

6 years ago



Topic Stats

  • 7 posts
  • 4 Pinsiders participating
  • No one calls this topic a favorite

You

Linked Games

  • Taxi Williams, 1988
#1 6 years ago

I’m not very knowledgable with electronic stuff like this so please bare with me. Just picked up a Taxi. GI light but that’s it. No display. No inserts, nothing. None of the 3 diagnostic LEDs light. Obviously no power getting to the board. I did all I really know how to do. Checked the fuses and reseated the connectors.

Any suggestions of what to do next would be really appreciated.

Suggestions of a good pinball repair guy in the Washington DC area also appreciated.

#2 6 years ago
Quoted from Leosac:

I’m not very knowledgable with electronic stuff like this so please bare with me. Just picked up a Taxi. GI light but that’s it. No display. No inserts, nothing. None of the 3 diagnostic LEDs light. Obviously no power getting to the board. I did all I really know how to do. Checked the fuses and reseated the connectors.
Any suggestions of what to do next would be really appreciated.
Suggestions of a good pinball repair guy in the Washington DC area also appreciated.

Check if your knocker coil is seized/shorted out in the upper left part of the backbox. I was having same issue and that was the problem, you can just disconnect it to see.

#3 6 years ago

You need a voltmeter to test for the proper voltages to the MPU.

#4 6 years ago

I have a multimeter. Just not sure how to check the voltage as you suggest.

#5 6 years ago
Quoted from Leosac:

I have a multimeter. Just not sure how to check the voltage as you suggest.

Give this a read:
http://www.pinwiki.com/wiki/index.php?title=Williams_System_9_-_11#Normal_Game_Boot_Behavior

1 week later
#6 6 years ago

New power supply. All is good.

#7 6 years ago
Quoted from Leosac:

New power supply. All is good.

Thanks for posting the follow-up!

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