Hello

Have issue with the new locomotive 55384 – which is unfortunately without guaranty list because is taken form the „second hand“

All the functions work properly without trouble – except the main noise (function F2).
When the locomotive stand it is doing all what use to do – adding coil, pumping water – but when it run no sound is presented ( like moving of the pistons and opening of the valves).
When I turn the switch for running – the sound of brakes release follow but nothing more, wheels are turning and silent all around.-/

My feeling is that the decoder is not getting impulses from the wheels – decoder does not know that the locomotive is running.
Few options I can think about – that the system of the synchronisation on the wheel axe is malfunction (relay broken or magnets missing?) or that the cable connection in between decoder and the wheels sensor is broken. Cables seems to by tiny and brittle and probably could be simply damaged on the edge of connector or pulled out from connector – I believe that mistake is there on the „cable line“

Is there any method how to check what is going On?
Is there anywhere available scheme which cable in connector have which function (to try to make the bridge over)
Any other idea whet to do to run with main sound?

Thanks for help