ROGER1 posted:JT,
Glad you found a solution. But there's something I'm not understanding. You said that it ran in your hand, but when you put in on the track the transformer shut down like there was a short on the track. I assumed you meant the breaker tripped. Or did it? It's starting to sound like the car just stopped (due to lack of continuity from the roller and not a short).
I think I may have confused things, since I wasn't the OP. My problem with a #50 isn't the same one the OP has, which started the thread. My bad - but, at least my problem is solved! I'm now starting to use DioxIT a bit more frequently as it can be a miracle worker when something is giving connectivity grief...