Trains.com

Subscriber & Member Login

Login, or register today to interact in our online community, comment on articles, receive our newsletter, manage your account online and more!

Won't run

919 views
2 replies
1 rating 2 rating 3 rating 4 rating 5 rating
JRP
  • Member since
    November 2006
  • From: Upland, CA
  • 301 posts
Won't run
Posted by JRP on Saturday, May 9, 2020 6:13 PM

I have an Athearn GP35 RTR (from 2008) that added a new ECO-PNP decoder, lights, speaker and pick-up wires to the wheels.  It tested well for a few short runs, but had noise with the shell on.  I removed the shell to test just the motor to find the noise. but now can't get it run at all.  The decoder "blue" light still comes on, and my throttle works fine with other locos.  The motor has only been run about 1 hour, if that.  I have examined the wires and frame closely, but can't for the life of me find out why the loco won't run.  Photos attached so you might see what I don't see.  Thanks for looking. 

JRP

Top of Athearn motor, decoder, wires

 Side view of Athearn motor, wiring, decoder

Tags: Athearn GP35
  • Member since
    September 2003
  • 10,582 posts
Posted by mlehman on Sunday, May 10, 2020 4:14 AM

With what works and what doesn't, I recommend rechecking your gray and orange leads to the motor. I'll note that on my first Tsunami install in a brass loco, I got everything running right, was very proud I'd managed the p[roject and the decoder just went dead, or so it seemed. After concluding I'd hosed it somehow, I sent it back to Durango to revive. Turned out I'd pulled one lead loose from the PCB inside the shrink wrap, so all that was needed was to peel pack the shrink a little farther, then resolder to the board.

If they are still hooked up right, and you're certain you're using the address you just put into the loco when doing you settings, then try resetting the decoder to its default condition and see if that brings it back.

Mike Lehman

Urbana, IL

  • Member since
    April 2004
  • From: Ontario Canada
  • 3,574 posts
Posted by Mark R. on Sunday, May 10, 2020 12:51 PM

Identical post in the Electronics section ....

Mark.

¡ uʍop ǝpısdn sı ǝɹnʇɐuƃıs ʎɯ 'dlǝɥ

Subscriber & Member Login

Login, or register today to interact in our online community, comment on articles, receive our newsletter, manage your account online and more!

Users Online

There are no community member online

Search the Community

ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT
Model Railroader Newsletter See all
Sign up for our FREE e-newsletter and get model railroad news in your inbox!