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(Topic ID: 264157)

Simpson’s kooky carnival Whitestar board no AC Voltage

By Zachtoops

4 years ago



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  • 2 Pinsiders participating
  • Latest reply 4 years ago by Zachtoops
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#1 4 years ago
OP
 
ZRT

Zachtoops

Pinside member

US Frisco, TX

5y 25,900 18 2

I recently picked up a simpsons kooky carnival redemption not working. Found the 50vac circuit is dead. I’m struggling with finding Whitestar board troubleshooting. Also the 20v test point only has 8volts. The fuses are good. Any suggestions?
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#2 4 years ago
 
ZAZ

zaza

Pinside+ Frequent

10y 92,650 3,268

I think this is a SAM board. Maybe I can give some help.

50 V
- Measure Vac across the 2 black wires of connector J11. Should be about 48 Vac.
- Check fuse + clips of fuse F5
- Check bridge BRDG1 with multimeter in "diode" setting.

20V
- Measure Vac across J17-6 (RED-WHT) and J17-7 (RED-? corner close to F9)
- Check fuse +clip of fuse F10
- Check bridge BRDG2 with multimeter in "diode" setting.

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#3 4 years ago
OP
 
ZRT

Zachtoops

Pinside member

US Frisco, TX

5y 25,900 18 2

Thanks so much for the help. Found the coin door switch was not engaging and killing the power.

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