RMweb Premium peterm1 Posted December 28, 2023 RMweb Premium Share Posted December 28, 2023 Hi all, My turn for a question. I think I know the answer but bear with me, if you would. I have an MS480 decoder that failed part way through sound loading and Stephan Hubinger at Zimo has given me some info' about fixing it. The one part I want to clear up is that one of the things I have to do is to connect the blue wire (common positive) to the common positive terminal on the MXTAPS. I can see that the last terminal in the row is marked C+/F4. As I say, I think I've got it as it's the only one marked this way, but confirmation from someone that actually knows this, would be really good. Link to post Share on other sites More sharing options...
Nigelcliffe Posted December 28, 2023 Share Posted December 28, 2023 Dunno, but you could use a multi-meter to trace that connection on the MXTAPS to the decoder positive on one of the decoder sockets, eg. PLUX. Link to post Share on other sites More sharing options...
RMweb Gold Bucoops Posted December 28, 2023 RMweb Gold Share Posted December 28, 2023 Must admit I've noticed that on my MXTAPS and wondered how it works - can't be a common AND a function output at the same time, can it?! Link to post Share on other sites More sharing options...
RMweb Premium peterm1 Posted December 28, 2023 Author RMweb Premium Share Posted December 28, 2023 Thanks for the replies. Nigel Cliffe, I must admit that you've lost me there. Bucoops, Exactly what I was wondering. The reason I haven't simply asked Zimo, is that they're busy and it's that time of year.. Link to post Share on other sites More sharing options...
RMweb Premium peterm1 Posted December 30, 2023 Author RMweb Premium Share Posted December 30, 2023 An update. I connected the common positive wire to the terminal +V/F4 that Stephan told me to, and the decoder went into self repair. This done, I followed the rest of the instructions to load one of the free uncoded files from Zimo. This took a long time to load and even then didn't sound right. I then loaded the sound file from Digitrains. This started at 12.45 and finally finished at 18.00. It was still nowhere near right, even though I could read CV's. I'm now thinking that I might have a faulty decoder. Nothing for it now, but to email Zimo again. Thanks for all the replies. 1 Link to post Share on other sites More sharing options...
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