Both are dead, with precisely the with the same malady, a truck has jammed on both.
You might recall I posted a few weeks ago this happened to the first GP 7 I had. I took it apart and found a tiny screw jammed in the gears, but when I removed it the wheels would not turn. I ordered a second one I liked it so much. Then, eventually, I took the whole truck apart on the first one apart, found nothing wrong, but when I put it back together it ran. I had two good ones: even posted pcis and all of them both running.
Until today. the new one failed first. I was running both when the new one instantly halfed. Same problem, the truck jams tight - no play at all in the wheels. If I play with it, power it down, power it up, shake it, it losses and runs for a bit, maybe as far as fifty feet, then jams. So I set it on a shelf and within fifteen minutes of running, the original one died again.
I'm disappointed and too tired to fuss with this (and too wary to even think of buying any more LC+ diesels).
Both were running on a ZW-L, on track that had been cleaned , vacummed, and had LC+ steamers running on it fine for an hour before.
My two LC+ locos, one end of each runs fine, but the other end of each is locked solid - wheels won't budge.