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Discussion Starter · #1 ·
Hi all, I am really baffled and would appreciate your help! I have a DCC layout with a reverse loop at each end. There is an auto reverse module at each loop, I gapped the track in the same places, but only one of the reverse loops is working.
Here is a photo.

http://i935.photobucket.com/albums/ad200/MatCKP/Turnout_zpsll7l87s8.jpg

The area of track highlighted in blue has no power but all other track does and I can't figure out why. Really need your help!

—Matt
 

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Hi, Matt. Maybe some genius on here can sort out your problem just by looking, but I would need to see your whole layout, with the power feeds, auto-reversers, and insulated joiners clearly marked. My first guess would be that you have either wired / isolated a reversing loop incorrectly or that the turnout has a power routing contact underneath which is broken.
 

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Matt

That turnout may be losing it's internal connection. Most have
jumpers, visible under the turnout, some rely on the contact of
the points to the static rails.

First, have you checked the conductivity of the brass joiners
where they connect the diverting track?

To locate the problem, set your multimeter on AC volts.
DCC power on. No locos running.
Set the points to straight through.
Put one probe on the straight through left rail. Put the other
probe on the straight thru right rail above the frog. That should
give an approximately 14 volt reading. Now move the probe on
the right rail to the straight through points. You should get the same
reading. Now move the right rail probe to below the frog and
get the same reading. If you fail a reading at any point there is
a problem.

Now do the same test but throw the points to divert and use the
right rail probe again above the frog, then the divert points and
finally the diverting rail below the points. If any of these fail
giving the track voltage reading the turnout has an internal
problem, or, as I said, the point rails are not contacting the
static rails. (if that it may need an adjustment, or a cleaning).

Now if you get good readings at all points on the test the
problem has to be that the joiners to the diverting track
have lost conductivity.

I couldn't tell the make of the turnout but it could be
power routing. If so, when points set to straight power
to the diverting track would be off, or off to straight if
set to divert.

Don
 

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Discussion Starter · #5 ·
DCC Turnout

Turns out it was the dang turnout. I replaced it and it is running fine now.

Thanks for all your suggestions, I really appreciate your responding!
 

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That's the whole purpose of this site, Matt. Glad it was that easy to solve.
 
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