I have a questions about Bachmann power Supplies and train engines.  Is there more than one type of power supplies for the Bachmann HO Engines?  If so how do you know what engines require what power supply?  I have a 6 volt power supply from the 70's, looking to replace my enigne and concerned about compatability with my power supply.

It was new about 25 years ago and didn't run very much, less than an hour of run time.  How can you tell if it is DC or DCC?  My son want to have it running and I wold like to figure it out and get it going.  I'll have to listen a little closer to to see if I hear a hum.  I have not taken the engine apart.  Any help would be appreciated.

looking for troubleshooting information for a GE U36B Diesel Engine.  It lights up, but doesn't move either direction.  Need help to troubleshoot problem.

Have a HO Engine I received many years from my parents. At the time I received it, I assembled the track, it ran for maybe five minutes and then stopped.  Dug it back to see if it would run, the lights in the engine lite up but it doesn't move any ides?