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Offline Gunnar  
#1 Posted : 22 November 2021 13:18:31(UTC)
Gunnar

Norway   
Joined: 10/02/2020(UTC)
Posts: 24
Location: Rasta
Hi all,

I have bought decoders from Decoderwerk and fitted them to according to instructions on my C track turners. A snug fit and they work according to instructions.
They have been programmed one by one and addressed correctly. There are 6 turners consisting of 3 20671 and 3 24672. Everything works fine as long as I mount them
on the same track.
The track are two ovals with three turners on the left and same number on the right. I am sure you all will understand the line setup. To the left I have the numbers 1, 2 and 3.
On the left hand I have them numbered 4,5 and 6.
They all work perfect save for one thing: As soon as I connect them all up to both oval (the outer one) they suddenly change their behavior. Then only two works as they should. It is the outside oval that somwhow 20200321_163532.jpg cause them to suddenly fall out.

Anyone have an experience with these decoders please let me know. I have trouble uploading pictures but gave it a try.

Gunnar
thanks 1 user liked this useful post by Gunnar
Offline marklinist5999  
#2 Posted : 22 November 2021 14:10:25(UTC)
marklinist5999

United States   
Joined: 10/02/2021(UTC)
Posts: 1,170
Location: Michigan, Troy
When you enlarge the photo, it's upright! You aren't alone in uploading pics. I've only read good reviews about Decoderwerks. Wether a decoder is made bu ESU, them, Marklin,
Viessmann, etc. if they use quality chips, and do quality work, I think they are good. The current situation I have learned from someone in the medical device industry is a resin shortage affecting certain electronic parts makers. It's used to insulate certain chips, etc. from wires, I.C. boards, and heat.
Offline Gunnar  
#3 Posted : 22 November 2021 15:05:06(UTC)
Gunnar

Norway   
Joined: 10/02/2020(UTC)
Posts: 24
Location: Rasta
Thanks for your answer and I myself feel the decoders are very very good. But the trouble starts when connecting the last one to the outer track then all
goes haywire.
The track plan attached may indicate my bottom layout andtrack1 bottom.jpg. It is the outer one to the right in the photo that puzzles me. Unconected to
the outer track all is well.
Offline mbarreto  
#4 Posted : 22 November 2021 15:29:12(UTC)
mbarreto

Portugal   
Joined: 18/02/2008(UTC)
Posts: 980

You need to isolate the problem.

Divide the outer track in segments, each segment with just one turnout.

Add one segment at a time to the inner oval and test it before add other segment.

This way will move you towards understanding what is creating the issue.
Mostly Märklin H0.


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Offline Gunnar  
#5 Posted : 22 November 2021 17:27:08(UTC)
Gunnar

Norway   
Joined: 10/02/2020(UTC)
Posts: 24
Location: Rasta
Already done and as long as I use the oval tracks all is now well. The fault may be on the upper tracks so these have been cut off. I shall follow your advice and
connect the upper tracks in portion starting on the left side where I have C tracks. Right side is M tracksUpper tracks.jpg

Thanks all of you for wonderful hints and help.
thanks 1 user liked this useful post by Gunnar
Offline JohnjeanB  
#6 Posted : 22 November 2021 23:44:27(UTC)
JohnjeanB

France   
Joined: 04/02/2011(UTC)
Posts: 1,808
Location: Paris, France
Hi Gunnar
From what you describe, it seems that when you connect the 2 loops, the digital signal is distorted.
One possibility is that some RF noise protection is still connected to one of your rails.
One quick way of locating the problem is to start with the good loop and then connect groups of rails and check. If OK, extend the layout. If not, inspected closely the added sections
Another way is to check the M track sections (full length straight or full length R1 sections) as they may have capacitors between the B and the O. While on C track it has always been an add-on circuit coupled with a power feeder.
Cheers
Jean

My layout videos
latest vid
hump yard
Offline Gunnar  
#7 Posted : 23 November 2021 08:48:52(UTC)
Gunnar

Norway   
Joined: 10/02/2020(UTC)
Posts: 24
Location: Rasta
Thanks for your advice and the fault may be a capacitor. I shall check evert section and add them one by one and find the fault. On the C track everything now runs perfect!

To all of you: Many many thanks and I shall keep you informed. ThumpUp ThumpUp ThumpUp
thanks 1 user liked this useful post by Gunnar
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