(Topic ID: 344137)

Switches on Row 2 Stuck On

By Dan_Halen

9 months ago



Topic Stats

  • 3 posts
  • 2 Pinsiders participating
  • Latest reply 9 months ago by Dan_Halen
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#1 9 months ago

Hi All!

I've been working through a Jokerz! machine with incessant issues and I'm getting all switches on Row 2 locked on, causing Solenoid 1 to fire constantly (but not locking on). I've been able to test all the switches individually and their diodes, aside from the A/C Switch Side C as I'm silly and can't seem to find it.

The A/C relay is switching along with Solenoid 1, so I'm fairly confident it's working as expected, but I'm at a bit of a loss. I thought the issue might be related to the Interconnect board as I can make it stop if I remove all switches from the MPU, but I tested U1, U2, U3 and I think they're working correctly, but I could be wrong.

I'm pretty stumped and would like to get this thing out of my life, any input or ideas are greatly appreciated.

Thank you!

#2 9 months ago

Is the resistor pak at SR11 cracked or shorted ?

LTG : )

#3 9 months ago
Quoted from LTG:

Is the resistor pak at SR11 cracked or shorted ?
LTG : )

Pretty heavy resistance across all legs of SR11, Sir. The board recently came back from Eugene MOSH, so I think the MPU might be okay.

If I remove all switch plugs from the MPU board I can short individual switches out and that feels like something

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