(Topic ID: 283243)

WPC No 5v TP2

By PinballGurus

3 years ago



Topic Stats

  • 4 posts
  • 4 Pinsiders participating
  • Latest reply 3 years ago by jlm33
  • No one calls this topic a favorite

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#1 3 years ago

I have a WPC Power Driver Board for Popeye that was working perfectly then turned off and will no longer boot. TP2 is missing 5v and registers .3v. I know the BR2 is good because I just swapped it out of a working machine and got the same result. However, BR2 is only registering 7.2v on the positive leg instead of 12v that it should. I’ve replaced C5 and LM323K too and that didn’t help either. Any ideas what could cause this? I’m new to WPC boards and there wasn’t much on Pinwiki I haven’t already tried. My guess is it’s something to do with only getting 7.2 volts to BR2 positive leg??? What would cause that?

Thanks in advance.

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#2 3 years ago

@PinballGurus, you might be better served by posting your DMD game issues in the DMD tech subforum where you'll get better targeted support. Please ask a moderator to move it.

https://pinside.com/pinball/forum/forum/tech-dot-matrix-games

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This early solid state tech subforum generally deals with games to 1985.

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#3 3 years ago

You probably damaged the thru-plated holes while replacing BR2/C5.

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