01-14-2009, 09:08 AM
This is a fairly uneducated guess, but "buzzes and hums" and "runs forward out of control" sounds as if the power is bypassing the decoder somehow, since this behaviour can be characteristic of DC locos (trying to) operate on DCC.
Perhaps the motor is not fully isolated from the frame or other "current-carrying" components? I know in some cases, pickups are actually part of the motor brushes, and can be extremely hard to isolate, or even see...
Time to get out the multi-meter and look for conductivity where there should be none...!
Hope that helps.
Andrew
Perhaps the motor is not fully isolated from the frame or other "current-carrying" components? I know in some cases, pickups are actually part of the motor brushes, and can be extremely hard to isolate, or even see...
Time to get out the multi-meter and look for conductivity where there should be none...!
Hope that helps.
Andrew