My layout is in the attic of my airplane roof bungalow. The mainline runs at the extreme edge of the roof, where the headroom is only a foot or so. That stretch is also blocked by boxes of trains. That's exactly where the latest train stopped when a capacitor exploded and caught the inside of the loco on fire recently. I could see the loco, but could not reach it. I had to watch to make sure it would not burn. The mainline was shorted, so there was no way to get to it quickly. It took two days to move stuff to get to the loco. The house smelled of burnt electronics for a week.
The vendor I bought it from said "too bad" but it really was not his fault, as the loco ran for an hour before self destructing.
