Dear friends,
I watch the forum topics closely since 2010 and now its time I ask some questions about Marklin decoders, older and newer (mld/msd and mld3/msd3).

1) The older ones have a series of 9 solder pads. Does anybody know what are they for?
2) I have connected a 25V/2200uF capacitor with resistor and diode to the pin 16 and pin 20 of an msd decoder and only the functions are bufferd against mini power losses (which seems natural regarding the pins the capacitor is connected). How can I buffer the motor also in order to give the power to the locomotive so it can overpass a dirty point on the tracks?
3) Can the newer power pack from Marklin be connected to older decoders, other than mld3/msd3, and if yes to which pins/solder pads. Can also be programmed by the CVs?
4) Can the newer power pack be connected to MFX+ decoders that already come installed on the newer locomotives?
5) Is there a way to adjust the CVs 57 and 58 (are for adjusting the chuffs of steam locomotives) and CVs 61 and 62 (are for the random sounds distance) of older and newer mfx decoders that do not give you this capability from within Central Station?

Thank you for your time.

This is an example of Marklin msd sound decoder.


Does anybody know what the nine solder pads on the right down corner do?

About the capacitor: What I did is to put a capacitor to pins 16 and 20 which are where an orange and violet cables should be. But I found out that only the functions and sounds are buffered and not the motor.
For example: If the locomotive hit a dirty spot on the track is stops moving and, with a 25v / 2200uF capacitor, after one second the sound stops and the lights go out.
What we are trying to prevent with the capacitor is that the loco does not stop on the dirty track and continous until it takes power again.
So are there any other pins where we can put a capacitor to prevent the motor from stopping?

This is only to ktsolias.
Δεν μπόρεσα να καταλάβω για το καινούριο powerpack που έβγαλε η Marklin. Κανονικά είναι για τους mld3/msd3 decoders που πωλούνται χωριστά από την Marklin ή μπορώ να το συνδέσω και σε μηχανές που βγαίνουν από το εργοστάσιο με καινούριους decoders τύπου MFX+.

They will be for factory testing and programming the initial firmware load into the decoder. The PCB will be put on a 'bed of nails' test jig which has spring loaded contacts that will make contact with them. Quite a common method for PCBs that have a microprocessor on them.