Baby Pac-Man Lamp Problem

(Topic ID: 204898)

Baby Pac-Man Lamp Problem


By pinmods

9 months ago



Topic Stats

  • 4 posts
  • 3 Pinsiders participating
  • Latest reply 9 months ago by Inkochnito
  • Topic is favorited by 2 Pinsiders

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#1 9 months ago

I can't figure this out. I replaced the capacitors and resistors for Q13 and I'm still getting no lamps for the 2 locations that it drives. Anyone have any suggestions? Going up a wall here.

#2 9 months ago

Normally, the SCR is the weak link and is the first to fail. Have you replaced the SCR that corresponds to the faulty lamp?

There's a chart here that matches up lamps to SCR Q numbers.

http://www.pinwiki.com/wiki/index.php?title=Baby_Pac-Man#Lamps

#3 9 months ago
Quoted from ForceFlow:

Normally, the SCR is the weak link and is the first to fail. Have you replaced the SCR that corresponds to the faulty lamp?
There's a chart here that matches up lamps to SCR Q numbers.
http://www.pinwiki.com/wiki/index.php?title=Baby_Pac-Man#Lamps

Yes. Q13. That's what I meant by capacitor, sorry. Still nothing.

#4 9 months ago

Did you also check the diodes on both lamps?
Are you sure the connector is good?
Chech the print header A3J1-pin 5.
Do you have 6 to 7 Vdc at the connector A3J1-5?

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