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(Topic ID: 275922)

Kings of Steel bank of lights out


By GPrince

55 days ago



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  • 4 posts
  • 2 Pinsiders participating
  • Latest reply 34 days ago by GPrince
  • No one calls this topic a favorite

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20200817_161000.jpg

#1 55 days ago

I've got playfield lights for cards 1-8 out. They correspond with several outputs from U2 and U3 on the aux lamp driver, so I replaced both. It didn't fix them, but also didn't effect anything else. It seems wildly coincidental that all the SCRs for this sequence of lights could be out. Is it likely a signal from upstream?

20200817_161000.jpg
#2 55 days ago

My guess would be to re-flow solder on the Auxiliary Driver Board, could also be a bad trifuricon

wiggle the wires on there a bit to see if lamps flicker

#3 55 days ago

I'll give it a go!

3 weeks later
#4 34 days ago

Okay, after reflowing the solder and testing connections, it turned out to be the flip-flop IC at U1 on the aux lamp driver. 1.75 (and a few hours of testing) later, all lights are flashing!

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