Freerails Home 
Home Search search Menu menu Not logged in - Login | Register
Freerails > Model Railroad Forums > D.C.C. Electrical & Sound > Troubleshooting Help - 'E.S.U.' Sound Decoder

Freerails IS ACCEPTING new Members ... To join Freerails ... See how to Register as a Member in the 'Joining Freerails' Forum

Troubleshooting Help - 'E.S.U.' Sound Decoder
 Moderated by: . Page:  First Page Previous Page  1  2  3  Next Page Last Page  
New Topic Reply Printer Friendly
 Rating:  Rating
AuthorPost
 Posted: Mon Mar 2nd, 2020 01:55 am
  PMQuoteReply
11th Post
Reg H
Moderator


Joined: Sun Oct 19th, 2014
Location: Shelton, USA
Posts: 960
Status: 
Offline
 
Peter

That makes sense. 

Steven's idea might find the problem.
 
But trying to make those connections,
with my 71-year old eyes and hands is not practical.

The motor looks like it is completely sealed. 
But it seems there ought to be access to the brushes.

Except that would not explain the refusal to reverse direction.  

Reg




____________________
Reg
Back To Top

 Posted: Mon Mar 2nd, 2020 03:42 am
  PMQuoteReply
12th Post
2foot6
Registered


Joined: Sun Oct 20th, 2013
Location: Near Melbourne Victoria, Australia
Posts: 489
Status: 
Online
 
The fact the motor only turns one direction is a mystery,

that could be caused by soft springs or worn brushes.


It is not a common decoder issue,

but I'm thinking it may be the decoder or brushes.


....................Peter




____________________
I aspire to inspire before I expire.
Back To Top

 Posted: Mon Mar 2nd, 2020 03:47 am
  PMQuoteReply
13th Post
2foot6
Registered


Joined: Sun Oct 20th, 2013
Location: Near Melbourne Victoria, Australia
Posts: 489
Status: 
Online
 
Reg

I have had another thought.


Can you remove the decoder,

trace out the motor wires, and connect a 12 volt DC power supply to them,

and try the motor with 12 volts, in both directions.


If it works OK, then the decoder is at fault,

or if it is still a problem, then the motor is faulty.


.....Peter




____________________
I aspire to inspire before I expire.
Back To Top

 Posted: Mon Mar 2nd, 2020 03:54 pm
  PMQuoteReply
14th Post
Reg H
Moderator


Joined: Sun Oct 19th, 2014
Location: Shelton, USA
Posts: 960
Status: 
Offline
 
Peter

That is a good idea. 

If I choose to replace the decoder, I will run a test like that. 

I don't want to start seriously hacking things apart, without a replacement plan.

Reg




____________________
Reg
Back To Top

 Posted: Mon Mar 2nd, 2020 08:28 pm
  PMQuoteReply
15th Post
Si.
Moderator


Joined: Thu Feb 23rd, 2012
Location: London
Posts: 5577
Status: 
Online
 
Hi Reg  :!:



I have seen tons of 'broken inside insulation' ...

... single copper solid-core wires over the years.  :f:


Also some multi-stranded non-conductors as well.

Also 'pro-audio' mic-cables, snapped 1/2 way along inside the cable. 


All these faults were invisible, under the insulation of course.  :us:



One has to be careful these days not to get mugged by ALUMINIUM WIRE ! as well ...  :shocked:

... single solid-core, pulled out of ever handy CAT-5 cables, is often copper-plated aluminium !

It will SNAP inside, pretty much as soon as you bend it sharply, only a couple o' times.  :f:



I like silver-plated copper multi-stranded insulated in P.T.F.E. Teflon(TM) for my audio stuff.  :cool:

For model trains & slot-cars, I like multistranded SILICONE insulated electrical wire.  :thumb:


The P.T.F.E. is tricky to strip the insulation, due to the slipperyness of the Teflon(TM) ...

... but with both P.T.F.E. & SILICONE, the insulation doesn't 'melt-back' when soldering.  :bg:

I damn well HATE regular meltable P.V.C. conductor insulation !  :td:



Cost wise, you wouldn't notice 'much' difference in price, for a yard or two.  L:

They are both available on eBay for a $ Buck or two, for a few yards of cable.



:java: :brill: :dt:



Si.




____________________

' Mysterious Moose Mountain ' - 1:35n2 - pt.II
http://www.freerails.com/view_topic.php?id=7318&forum_id=17&page=1

' M:R:W Motor Speedway !!! ' - 1:32 Slotcar Racing Layout
http://www.slotforum.com/forums/index.php?showtopic=59295&st=0&a
Back To Top

 Posted: Tue Mar 3rd, 2020 01:26 am
  PMQuoteReply
16th Post
2foot6
Registered


Joined: Sun Oct 20th, 2013
Location: Near Melbourne Victoria, Australia
Posts: 489
Status: 
Online
 
Reg

You will be able to trace the wires to the motor, using a multimeter.

...............Peter





____________________
I aspire to inspire before I expire.
Back To Top

 Posted: Tue Mar 3rd, 2020 01:30 am
  PMQuoteReply
17th Post
bobquincy
Registered


Joined: Sun Jan 27th, 2013
Location: Florida USA
Posts: 294
Status: 
Offline
 
I have had a motor run only in one direction,
and intermittently, due to worn out brushes.

The motor had metal brushes, and they were worn through,
making contact only sometimes.





As for wire,
the best I have found
(and all that I use for models) is Daburn 2671.

boB




____________________
Monorail modelers have a one track mind.
Back To Top

 Posted: Tue Mar 3rd, 2020 03:33 am
  PMQuoteReply
18th Post
2foot6
Registered


Joined: Sun Oct 20th, 2013
Location: Near Melbourne Victoria, Australia
Posts: 489
Status: 
Online
 
Reg

I have just gone through a box of faulty decoders I have collected over the years,

and one gives me the same problem you have.


It runs well in one direction and will not reverse.

I suggest you try another decoder to prove the problem.

....................Peter




____________________
I aspire to inspire before I expire.
Back To Top

 Posted: Tue Mar 3rd, 2020 03:40 pm
  PMQuoteReply
19th Post
Reg H
Moderator


Joined: Sun Oct 19th, 2014
Location: Shelton, USA
Posts: 960
Status: 
Offline
 
Si:

I am pretty sure I have continuity to the decoder. 
It programmed just fine.


There seems to be enough wire trimmed off the decoder,
to provide for the rest of the install.

I save all the pieces I trim off.


My big frustration is finding a wire stripper,
that will dependably strip #30 wire. 

I found one at MicroMark.  


Peter:

Those are wimpy looking brushes!! 
I suppose that is standard for the can motors. 

I will test the motor before I order a new decoder. 
If that doesn't test out, I will replace the motor.

But I am pretty sure I am going to change out the decoder. 


Reg




____________________
Reg
Back To Top

 Posted: Tue Mar 3rd, 2020 09:33 pm
  PMQuoteReply
20th Post
bobquincy
Registered


Joined: Sun Jan 27th, 2013
Location: Florida USA
Posts: 294
Status: 
Offline
 
The Ideal 45-125 T-7 wire stripper,

(about $12)

Works well for 30 AWG  (24 to 32 stranded).




____________________
Monorail modelers have a one track mind.
Back To Top


 Current time is 05:57 am
Page:  First Page Previous Page  1  2  3  Next Page Last Page  

Freerails > Model Railroad Forums > D.C.C. Electrical & Sound > Troubleshooting Help - 'E.S.U.' Sound Decoder
Top



UltraBB 1.172 Copyright © 2007-2016 Data 1 Systems