(Topic ID: 296804)

1994 Demolition Man Coin Door “Enter” Button Not Working

By PinballGurus

14 days ago



Topic Stats

  • 6 posts
  • 3 Pinsiders participating
  • Latest reply 7 days ago by LTG
  • No one calls this topic a favorite

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#1 14 days ago

Enter button on coin door works intermittently. Tested button with multimeter and button works when pressed. Any ideas what could cause this issue? The three other buttons work as they should. Cannot access the menu…

Perhaps a stuck playfield switch? The bottom does work occasionally.

Thanks in advance.

#2 14 days ago

Battery damage on CPU ? It gets the diagnostic stuff first.

Quoted from PinballGurus:

Perhaps a stuck playfield switch?

No.

LTG : )

#3 14 days ago

Thanks… I’ll try that!

Quoted from LTG:

Battery damage on CPU ? It gets the diagnostic stuff first.

No.
LTG : )

#4 14 days ago

reseat connectors and pull apart then reconnect associated plugs

1 week later
#5 7 days ago

Thanks. I was finally able to took a look and there was battery damage on the CPU-89 board. The only board damage I saw was near the BA10339 chip just under the battery holder when there was the leak. At this point I’m assuming the thin trace near the chip was damaged and not the chip itself. Is this where I should start. Is there a repair guide for this fix anywhere? Normally for $229 for a new board I would just replace the board, but none are available so I figured I would see what I can do… It was only the test button that wasn’t working, the other three buttons work fine. Any help or advice would he appreciated. Thanks in advance.

Quoted from LTG:

Battery damage on CPU ? It gets the diagnostic stuff first.

No.
LTG : )

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