Hello All,

I apologize for posting yet another question.

I have taken my BR 212 out of its box. It is the Märklin 3072, therefore an analogue model I bought in June 1992 in Model Sigfried in Karlsruhe.

My intention is to install ( I have never done it before but I´m going to give it a try) 60906 decoder,a nd run in on my Martinstown enhanced layout, which is in trials before I start decorating.

To my surprise, it has this look inside. You will also see a Number 2 sticker. I honestly don´t know what to think. I remember that before I put all my Märklin rolling stock and locos away in 1994 I had 2 locos digitalised. Unfortunately I have no record of this one being digitised. But the installation in the picture does not correspond to the instructions for the model 3072. It has 7 cables soldered to whatever this unit is. And not 3 as shown in the schematics. So it seems to correspond to other models mentioned.

Questions:

1.- Is this a decoder? Could it be that I had it installed at some point and forgotten to record it?

2.- If not, why does the schematics not correspond to the model I bought?

Thank you in advance for your thoughts
Santiago

IMG_8022.jpeg (2,245kb) downloaded 45 time(s). IMG_8023.jpeg (2,893kb) downloaded 31 time(s).

Thank you. Maybe I will try Number 2. The sticker in my handwriting on the box says 2 as you can see in the picture. It makes no other sense to me.

I only have an MS2, but I will try and see if it works. Still some work to do, because I have to clean and oil the motor. Seems a bit more difficult than other models, or tighter.

Santiago

I post a picture as you requested. Not that it will make much difference IMHO. But many thanks for taking a look. I understand from your post that I DO NOT have a decoder installed, and therefore my 3072 is analogue, and I will have to install a 60906 decoder, which I have here. I have never done anything remotely similar, but since I cannot work the loko on analogue on the layout I am building and my modest Railway needs Diesel power, I will take the risk. Hwever I will first try and open the motor and clean it because as it is it is clogged with 40 year old grease and grime.

Santiago IMG_8024.jpeg (2,972kb) downloaded 20 time(s).

Many thanks! I will test it with address 72.

But I have to get it assembled first. I started early at 7.30 am to dessable the motor and go thru a thorough leaning after 40 years in the box. Rarely have I seen so much seized oil and grime. I have after spent the best part of 2 hours trying to get it back together. But I simply don´t have the manual skills, unless I am missing something when I try and assemble the traction bogie.

There must be a simple system to get the piece identified as number 15 in the picture I now upload. I cannot figure it out and I find it impossible to keep it in place while I try and insert the bogie.

sobre IMG_8035.jpeg (2,057kb) downloaded 11 time(s). IMG_8034.jpeg (2,509kb) downloaded 10 time(s).

Hi Santiago
Apparently your electronic module is a Delta of the first version using Märklin chip 701-13
The adress setting on this type is made by "Lötbrücken" (Solder bridges)

This is what says this web page
https://moba-hgh.de/modellbahn/t...ie-delta#delta-decoder-2

The Delta variante 1 looks like this

IMO it looks exactly like your module

Address settings?
The same website indicates


Not sure but it looks like all bridges are soldered
So this could be for analogue operation BUT I am not sure here

Cheers
Jean

The Märklin reference for delta / digital decoders is here
Märklin coding table = Codiertabelle
but, to be fair, it is not helping much in this case

I don't own that loco, so I can only guess from what you posted. Unfortunately you showed only part of the diagram, but one can infer that part 15's position and function.

I see a thread in the motor block that seems without function if not to hold a screw to keep that part in place when installing. Could you try that and report back?

"No, all bridges soldered is address 80. Analogue operation is no bridging at all.": That is what I thought. And why I wondered if it had been originally run and how and what controller he had now. If he has a CS3 he might be able to find the address, if there is one, though I am not sure with that old a decoder. Or just touching each solder joint with a soldering iron might reestablish the connection and create digital address 80. The nice thig about 80 is that it is the address of either decoder.