artp51;I have an older Bachmann loco that makes a loud hum when starting. It is EMD GP40 loco. Dcc on board. Will changing decoders help? Road name is SF 3501. Thanks.
It is! The board I'm referring to has a plug-in jumper module which directly connects the rails to the motor so that the loco can run on DC track. If you unplug that jumper and plug in a DCC decoder then you can run on DCC track.Dang, I've always thought that DCC power to a straight D.C. loco was a death sentence.