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Question Older k 83 decoder - Trouble shooting
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Offline Paul gRAVER  
#1 Posted : 03 November 2025 17:56:12(UTC)
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Paul gRAVER

United States   
Joined: 03/11/2025(UTC)
Posts: 1
Location: Colorado, Denver
I am wiring a Marklin HO layout using old style track and K k83 decoders. I cannot get the decoder to change the turnout position. The turnout light goes on, so I am guessing power is reaching the turnout. I tried another keyboard and have reset the keyboard and decoder switches. Other than lighting the turnout light, I get no response from the turnout or a nearby uncoupler. Any ideas?
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Offline mvd71  
#2 Posted : 03 November 2025 18:53:49(UTC)
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mvd71

New Zealand   
Joined: 09/08/2008(UTC)
Posts: 1,966
Location: Auckland,
Try connecting the decoder output to another turnout to check if the problem is the turnout or the decoder.
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Offline RudiC  
#3 Posted : 03 November 2025 20:21:36(UTC)
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RudiC

Germany   
Joined: 28/01/2024(UTC)
Posts: 74
Location: Nordrhein-Westfalen, Aachen
Does the turnout motor move at all, e.g. when connected (for a split second) to the power supply?
A picture of your wiring might help.
Regards,
Rüdiger (Rudi)
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Offline BenP  
#4 Posted : 03 November 2025 22:21:39(UTC)
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BenP

United States   
Joined: 04/02/2021(UTC)
Posts: 534
Location: USA
Originally Posted by: Paul gRAVER Go to Quoted Post
I am wiring a Marklin HO layout using old style track and K k83 decoders. I cannot get the decoder to change the turnout position. The turnout light goes on, so I am guessing power is reaching the turnout. I tried another keyboard and have reset the keyboard and decoder switches. Other than lighting the turnout light, I get no response from the turnout or a nearby uncoupler. Any ideas?


Reset to what? Keyboard has one default setting (forgot which of 4 is on). K83 has 8 dip switches. What setting do you use for k83, as first keyboard allows only 1-16.
Yellow is accessory power; blue wires (red green) are switching ground connects.
Ben
Digital M track layout with vintage rolling stock and accessories controlled by CS3+Rocrail; small Z scale layout.
https://youtube.com/play...0kgVYbh0CeDTF-bYXoD_2-V9
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