Run away decoder

I have a TCS decoder installed in an Atlas RS3. When I try to run it, it runs at full speed. I have tried factory reset and emergency stop to no avail. Any suggestions on how to get it under control would be most appreciated.

Thanks,
John

 

It sounds like a the decoder is shorting out on the frame. Double check that the decoder is completely isolated.

Brian

 

It could be a command station thing. I've had this happened, reset the CS back to factory defaults and the problem was solved.

 

I too have seen this with a bad command station. I take it that your other locos run properly? Did the RS3 ever run correctly or is this a new decoder install?

 

My first thought was the motor is shorted to frame some place.

Gary

 

On an Atlas engine, look for one or both motor contacts shorting to the frame. I wrap the sides of my Atlas frames with kapton tape in the contact area. Helps a lot.

Martin Myers

 

It was a short and lots of kapton tape did the trick.

Thanks for the advice,
John