[pestes]

So the good news: There are no holes punched into the top of the slide! Yay, happy dance!

I don't appear to have any external magnets. The sensor/switch for both locked and unlocked is entirely within the hydraulic pin assembly. And they appear to be working exactly as expected. When the pin is retracted, there is continuity at the appropriate connector. Same with when the pin is extended. And the same for both sides. Which is good on one hand, but unfortunately it eliminated the easy answer.

And the bad news: I have found the wires for these switches back up at the control panel. And they indicate appropriate status as I extend and retract the lock pins. So it seems like it is likely an issue on the control board. Unless there's a fuse I can't see on the back side of one of the boards mounted on standoffs.