Atlas SD24 Master Line loco

[atsfrules]

Looking for some help.  I have a Atlas SD24 master line loco which came with a decoder installed.  The loco is getting power as the headlight works and responds to forward or reverse.  But other than that the loco will not move.  I added solder to the pads to help the decoder fit tight in the frame.  Any thoughts on what I should do next?  Thanks, Jerold

[Mike C]

   You might want to hardwire the motor contacts .  If its like other Atlas disels it is a common problem .......Mike

[mu26aeh]

Agree with Mike, it's the motor contacts to the bottom of the decoder, not enough tension.  Easiest solution is to solder the contacts to/thru the board if there are slots (ie NCE boards)

[wcfn100]

Is the motor spinning?

Jason

[atsfrules]

Thanks, I will try hard wiring the motor leads.

No, the motor is not spinning.

[peteski]

You could take the shell off, then try pressing down on the decoder board where the motor contacts are, and (with the speed cranked up) see if that makes the motor run.  If it does, then you know what the problem is.

[Steveruger45]

Or just pry up the motor contact tabs a little  to make a more positive pressure contact with the decoders motor pads.

[davefoxx]

Or just pry up the motor contact tabs a little  to make a more positive pressure contact with the decoders motor pads.

I was always able to get this to work, but sometimes you may even have to bend the tabs fore or aft as well, to really get full contact on the pads.  But, I'm lazy.  Hardwiring is the best option.

DFF

[woodone]

If the decoder does not have the small slots for the motor tabs I always use a small jumper between the motor tabs and the decoder.
Makes for a sure connection!