Humming noise in a switch motor also

Alex,

I know this is gonna sound silly, however, use a voltmeter and see if the switch motor is getting constant voltage. Check it while switching the turnout and afterwards. Maybe the AIU is continuing to send voltage or ground signal to the switch. Also take note if its happening to any other switches connected to the same AIU.

I hope this helps.

Mike R

Alex,

when I use the DCS remote it will not throw either way and makes a loud hum, but if a train hit's the non derail feature it works fine. Does anyone know what that could be.

It sounds like you've incorrectly wired the switch track to the AIU. The following diagram, from The DCS O Gauge Companion 2nd Edition, page 71, has the correct wiring:

 

Figure 19 Connecting a Switch Motor to the AIU (1)

 

This and a whole lot more is all in "The DCS O Gauge Companion 2nd Edition", now available for purchase as an eBook or a printed book from MTH's web store site! Click on the link below to go to MTH's web page for the book!

Thanks Mike R and Barry for your help.

Barry I have your book so I will take a look at the diagram and see if I did what you

said.

 

Thanks again very much, Alex