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(Topic ID: 282054)

lost both DMD's at the same time?


By oropuro

9 days ago



Topic Stats

  • 4 posts
  • 2 Pinsiders participating
  • Latest reply 5 days ago by ChrisHibler
  • No one calls this topic a favorite

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#1 9 days ago

Working on a Gottlieb Strikes 'n Spares bowling pinball game, and it has 2 DMD's and both stopped working at the same time? boards seem to have power(each has it's own board) Fuses look good, game plays blind. I can't imagine they both went out 100% at the same time, no burn or gassing prior, am I missing something? been stumped for awhile on this one, any help would be appriciated.

#2 8 days ago

I'm sure the displays are fine.
I would guess power. Do you have the correct high voltages of about 68, -100, and -112 (or so)?
--
Chris Hibler - CARGPB #31
http://www.ChrisHiblerPinball.com/Contact ... for board repairs
http://www.PinWiki.com - The Place to go for Pinball Repair Info

#3 5 days ago

where would i test for those voltages? on the end of the DMD cables or unplug from board and test there? LED flashing saying it has power coming in, so not sure how they both went out at once, when they have different DMD boards,

#4 5 days ago

On the transformer panel, remove F3 and F4.
Buzz them with your meter.
Those fuses protect the two AC voltages that the dot controller use to create power necessary for the DMDs to work.
--
Chris Hibler - CARGPB #31
http://www.ChrisHiblerPinball.com/Contact ... for board repairs
http://www.PinWiki.com - The Place to go for Pinball Repair Info

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