K84 decoder electronic scheme

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K84 decoder electronic scheme - I need to repair K84 decoder

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Eduardo Pereira		#1 Posted : 20 January 2026 20:05:13(UTC) Retweet
Joined: 07/07/2025(UTC) Posts: 3 Location: Tires		Good afternoon friends. I need to repair a K84 decoder and I do not have the electronic scheme. Can anyone tell me where I can get it? Kind regards Eduardo Pereira


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Kiko		#2 Posted : 20 January 2026 21:00:19(UTC) Retweet
Joined: 13/02/2017(UTC) Posts: 192 Location: Ottawa, ON		Originally Posted by: Eduardo Pereira I need to repair a K84 decoder and I do not have the electronic scheme. Hello Eduardo, Here you go (attached). I wish you good luck in your repair. BTW, I also included the k83 schematic, if you ever need it. Cheers, Andry k83 Schematic.pdf (24kb) downloaded 19 time(s). k84 Schematic.pdf (17kb) downloaded 25 time(s).
		Andry // Marklin HO K track; ECoS; TrainController Gold; Marklin & ESU decoders; Arduino controlled Switches, Semaphores & Accessories (DCC); Win 11 //

1 user liked this useful post by Kiko		Eduardo Pereira
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Ross		#3 Posted : 21 January 2026 02:00:31(UTC) Retweet
Joined: 25/09/2006(UTC) Posts: 961 Location: Sydney, NSW		Hello Andry, I would appreciate a credit where you sourced the schematics from. k83 schematic k84 schematic Originally Posted by: Kiko Originally Posted by: Eduardo Pereira I need to repair a K84 decoder and I do not have the electronic scheme. Hello Eduardo, Here you go (attached). I wish you good luck in your repair. BTW, I also included the k83 schematic, if you ever need it. Cheers, Andry
		Ross
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1 user liked this useful post by Ross		RudiC
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Kiko		#4 Posted : 21 January 2026 15:35:39(UTC) Retweet
Joined: 13/02/2017(UTC) Posts: 192 Location: Ottawa, ON		Originally Posted by: Ross I would appreciate a credit where you sourced the schematics from. Hello Ross, I'm very sorry, but I took it for granted that since your name clearly appears (it's printed) on the schematics, that credit was obvious. Andry
		Andry // Marklin HO K track; ECoS; TrainController Gold; Marklin & ESU decoders; Arduino controlled Switches, Semaphores & Accessories (DCC); Win 11 //


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Ross		#5 Posted : 21 January 2026 20:53:38(UTC) Retweet
Joined: 25/09/2006(UTC) Posts: 961 Location: Sydney, NSW		Hi Andry, Thank you for your reply and helping out Eduardo. Yes my name is on the document but the date when I created the file was before I had a web site. Copies of files may not always be up to date and that is why when I find good information I always like to state the source of where the information was found. In the past I have found my articles and photos published by others without permission or credit. Originally Posted by: Kiko Hello Ross, I'm very sorry, but I took it for granted that since your name clearly appears (it's printed) on the schematics, that credit was obvious. Andry
		Ross
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