Hello,

Recently, my old 3347 (BR 212) has a problem with electronic reverse unit. It goes in only in one direction. I am not sure what to do next. I think of two options

1. Find a new electronic reverse unit (61486) made by Siemen (may be out dated) and not sure the unit still avaiable on the market. If not, what should be replaced with ? Some said 60906 is not so good in running at low speed and very noisy when compare to 61486.Is that true ? And why?

2. Go for Digital conversion, what parts no. do I need ? My 3347 came with LFCM motor.

Thank you

Edited by user 23 October 2021 03:41:13(UTC)  | Reason: Not specified

When I opened the housing, I have checked them all. Everything seems to be OK. But not sure which one should I focusing on ? Any clue, I mean the color of the wire.

These units 614860 are quite robust, however like all electronic boards seem to have a limited life.

The previous attempt by Marklin using both a reverse unit and digital board 246800 are always failing in comparison.

Marklin discontinued the 614860 reverse unit about 18 months ago. I think with the introduction of the 60906 decoder
for retaining flat comm motors, this has become the option with backward compatibility for AC. However not as smooth on AC like the 614860.

You could buy a secondhand 614860 from eBay de. The problem though it is secondhand and would have to take the risk of its quality. Sometimes you can be lucky and a new one can be found on eBay.

David

Probably best to show a graphic of the decoder with the wire points and wires coming from the board. From this a spare unused wire contact point could be located. The light wires are orange + common, grey and yellow - front and back.

David