Thanks, I just got a DCC controller to see what all the fuss about it is. I'll have to figure out what to do next I guess.

So here's an odd one. Purchased a Chessie System GP7, item no. 62453 a few weeks ago. DCC equipped, but I run it on DC. Worked fine until recently when it has simply refused to move. Its getting power, but I'm guessing not enough as the headlights are dim when I work the transformer. Other engines, including a DCC C&O 2-8-4 work fine. Any ideas? This issue is baffling the heck out of me.