Latest update. I did what PhilP suggested and wired the decoder up to a spare motor and speaker and put it on my test track. Motor runs fine but no sound. Looks like it`s terminal. I am going to contact Massoth and see if I can send it to them for checking. If so I will send it with my Dimax, R/c unit and finally get my railway fixed. I have sold the lot to the people buying my house, so got to get it running properly !