Hello,

I have a Marklin 3039 loco which is on type C rails. Through the two analog controllers that I have, one is Mehano and the other is Fleischmann 6720 (the images of which are attached), the loco moves, but the reverse function of the controllers does not work and the locomotive only moves in one direction regardless of switching the direction...Thank you for helping me find the problem

Regards

Dear Farid, these Trafos aren't what do you need. Märklin Lokos ar all working with AC current. so, obviously you're using the wrong Trafo, You can find many of them in second hand for cheap. I hope it helps you
Beste regards
Stefano

The two transformers you show are DC. Maerklin operates using AC voltage. On classic models, the direction is determined by a mechanical or electrical relay, which is triggered by a voltage surge that is actuated by either turning the speed knob to the left of 0 or on older transformers, by pressing down on the speed knob. This action sends a voltage spike of around 23VAC, actuating the relay and the locomotive then runs in the opposite direction.

For operation in France, you need a basic transformer for 230V (66471). https://www.marklin.fr/p...ts/details/article/66471

I hope this helps.

You may also be able to find an older model (66470/6647) on ebay or other website

Regards

Mike C