Hmmmm.

Thanks, but that didn't fix it.

I have another (identical) 0-6-0 and I tried changing CV1=2. It wouldn't run.  I tried CV1=1, and CV1=18. They didn't work either. I returned CV1=3 and it worked okay.

I have a 51602 HO Steam Loco USRA 0-6-0 w/Smoke & Slope Tender Santa Fe #2121.

How do I reset the DCC On Board controller to it's factory defaults?

Also, something seems non-standard here. I program CV17=200, CV18=73, (for long address=2121) and CV29=34 (for "use long address") and the locomotive does nothing at address 2121. Trying to set it back to short address = 3 doesn't seem to work either.

I'm using a Digitrax DCS50 and it works fine with other Bachmann Locos such as my Bachmann 51804 HO Alco 2-6-0 Steam Loco (DCC Sound) ATSF#9441. What am I missing here?