Svein's 2012 Resolution challenge
#20
Thanks guys! I'm talking about the PL-13 auxiliary switch, mounted directly onto the turnout motor. I know, it doesn't make any sense, they're brand new, and the mechanical construction is so simple it should be allmost impossible for them to fail! But I used the multimeter and measured the resistance across the connecting pins on the switch, and the break was indeed inside the switch.

After several attempts trying to fix the connection by increasing the tension on the copper spring inside, I discovered that there were a thin, allmost invisible layer of dirt of some kind on the copper plating on the inside of the cover. After carefully scratching it off, I finally got the switches working again, but don't ask me how it got there in the first place.

Svein
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