So about a few weeks ago I acquired a MTH Proto-sound 2 CN U1F locomotive (6079) (20-3275-1?). I went to put it on my tracks (recently cleaned fastrack, TIU, WIU control) and was able to start it up with no issues. Ran the whistle a few times and the sounds also worked just fine (no garbling etc). When I went to move the engine, it went about half a foot, then stopped (restarted/disconnected itself).
Now it'll still start up just fine, plays the sounds just as well, but anytime it goes to move it will simply restart itself/ flicker its lights (indefinitely as long as there is power to track), and disconnect from control.
Not entirely sure what is going wrong here and can't find much in terms of similar issues online.
Thanks in advance for any assistance or advice anyone can provide on the matter.