(Topic ID: 138135)

Doctor Who popping DMD fuse

By travisbmartin

8 years ago



Topic Stats

  • 5 posts
  • 2 Pinsiders participating
  • Latest reply 8 years ago by Crash
  • No one calls this topic a favorite

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#1 8 years ago

I'm not going there for another three hours, but I figured I'd ask now.

There's a Doctor Who at the arcade I used to work at that is popping one of the DMD fuses (3/8 amp? Those exist?). It happened after my friend there swapped DMDs between it and a Jurassic Park to test the JP DMD.

I don't work on DMD stuff. Never owned a DMD game, and haven't touched the internals of one in years. I read online to check the Bridge Rectifiers on the DMD board, but other than cable checks and ground checks, I'm lost.

Any help would be great.

#2 8 years ago

Display is most likely shorted. Disconnect display cables and install a new fuse. Does it blow when you turn the game on?

#3 8 years ago

Sounds like it from what I've been told

#4 8 years ago

Ok. Im actually in front of the game
It's not getting the 60v to the dmd, but all the other voltages are there. I see a lot of wore out solder joints so I'll tackle them first.

The bridge rectifier on the board tested fine

If the soldering doesn't help, I guess a hv repair is needed. Or send the dmd board off.

There's a reason I have only games from the 80s...

#5 8 years ago

To be honest the type of technology used in these games is the same behind 80s solid state machines. Very well could be a power supply issue.

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