Hi Richard,

I never experienced it myself, but I heard, that some of the old decoders don't like a multi-protocol environment. It is worth a try to switch off all other protocols (MM, mfx) and to run it only with DCC 14.

Regards

Markus

Indeed old decoders do not like a multiple format environment. I have a silver museum BR80 which works fine with an added MRC steam sounder on a rolling road but fails to work on the track with mixed data. An idea to make your life easier with some of the older models where the lighting wiring is a fiddle is to just piggyback a modern decoder for the motor and leave the old one and lighting wiring intact. If you are going sound not so useful as there is more tinkering with CV's and programming to do. You can often unplug the power feed to the old decoder whilst you do the motor setup on the piggybacked decoder. If it was stuttering get it to run smoothly though or you may fry the new decoder and indeed it may recover the old one. To programme the old one is an archaic registry programming trip not CV's and it not supported by most 21st Century controllers or programmers. You can find the old Marklin kit cheaply and I have posted the instructions here I believe as the box may not come with them. As the whole system predates the internet and the easy sharing of PDF's information is a bit scarce.

Graham