Those “it can’t possibly be that” moments are the best… and the most humbling!
I once spent over an hour tracing a power issue across the layout, only to discover the culprit was a slightly loose power brick at the wall. I bumped it with a chair earlier and didn’t even notice.
And yes—pets are repeat offenders. My cat once jumped onto the benchwork and gently unplugged the throttle cable… mid-ops session.
Sometimes the issue isn’t where we think it is.
Maybe your locomotive was hesitating—but it turned out to be a tiny spiderweb across a sensor. Or a flickering light that only needed the plug rotated 180 degrees. Or the train wouldn’t run… because the cat unplugged the power supply.