I recently converted my Lufthansa Express BR 103 (Marklin 2868) to digital using the Marklin 60760 kit. The sodering and everything appears to be performed correctly, however when I run the locomotive onto the tracks with my DELTA DIGITAL controller, the locomotive disobeys the selected DELTA digital address and runs as if it is analog. Furthermore, the lights do not appear to work and the train appears to only run in one direction. I was wondering if anyone else has experienced this problem before and how were they able to resolve it. The kit states that the factory mode of the decoder is the "steam" address for DELTA, but it doesn't appear to obey that address.

Thanks you in advance.

Here are the photos. Please let me know if these are fine.

Thanks

Hi marylandmarklin,

A name is always nice to address you.

A word of caution. As you are upgrading an analogue loco did you change the bulbs for digital operation?

The old bulbs are 16V and digital bulbs are 22V. If you use the original bulbs they will get very hot and melt the surrounding plastic (light pipe)

You won't be able to change the default address of the decoder until you get a mobile station or 6021 or a central station. I suggest you find a Marklin person who lives near you to help you.

I would suggest to get a better decoder and change the bulbs for LED lights with a 1k current limiting resistor.

Dave stated the wire colours below and I have changed the description a little

Wire colors:
1). yellow = F0r negative wire to the rear headlight
2). gray = F0f negative wire to the front headlight
3). orange = +Plus common for functions
4). green = motor connection
5). blue = motor connection
6). brown = ground return
7). red = track power conductor

I noticed a blue wire going to the front / rear light & Motor. That worries me. I think the blue wire to the bulbs is joined with the orange wire.

Hi Tom,

I think marylandmarklin (name?) has used a blue wire between the bulbs and spliced the orange wire to the middle of the blue wire. He (name?) should confirm if this is true as it is hard to tell from the photo supplied.

Yes, sorry for the delayed response. The orange wire is spliced to the middle of the blue wire as I had extra blue wire provided from the kit. This blue wire is independent o f the blue wire that is used to connect with the motor.

Thanks,

Sahil

Yup that is correct, the blue wire extends the orange wire independent of the blue wire required for the motor.

Thanks,

Sahil

Hi Sahil

I have used the 60760 kit a few times and never had any issues with it, it seems you have the motor connected correctly, so assuming your controller is OK and the decoder is not damaged it should work...
Question:
When you move the control selector lets say to Diesel lok, can you still move the Lufthansa? or does the lok in any possition the controller is in?
Is your second lok a Delta lok?
If so, thus this lok works according the adresses on the controller? (steam, diesel, electric, etc...)

Jean-Pierre

Hi Sahil

So it looks like your other lok is set to address 24 (electric)
If it was me i would first confirm correct operation of the controller by changing the address in the other lok to 78
Easy to do just by switching dip switch # 4 to off (so only # 1 switch stay to on position)
If the other lok then responds only to "steam" it means the controller is working fine and the issue is with the Lufthansa....

I assume you cleaned up the motor housing and the gears when you installed the new 5 pole motor and magnet?
Did the motor run freely (is not stuck) when you assembled it?
Its not clear on your pictures where the brown wire is connected to, that should be a hooked up to a good grounding point, i normally solder them to the supplied lug that comes with the kit and goes to the motor shield.

If all the above is OK you could check if the motor is the issue or the decoder itself is bad, this will take a bit of simple ingenuity if you are up to that....

Using a simple 12V DC power supply (even better if it has adjustable voltage) you could feed the motor straight, after you disconnected the decoder from it, to see if it runs OK. Switching the polarity will spin the motor in the other direction....
If the motor runs the way it should like that, the decoder is most probably gone....

Hope this helps

Jean-Pierre