I am currently working on adding sound to a RhB Tm 2/2, the tiny, small LGB orange colored tractor. Work has progressed good up to the point of replacing the diesel sound with the RhB tractor sound. I am unable to upload a new sound file to the Massoth S-deoder, and will at random times in the upload get an error message that the data transmission fails. Yesterday that happended 40 min. in to the about 45 min. time to upload the sound .I have tried to use the LGB 50110 18VAC/5.5A power supply and also a Faller 16VAC/3.5A, both with the same issue. On the German Massoth forum a couple of guys have reported issues with the 50110 and one guy recommends a power supply with very low ripple to avoid this issue.
So, what type of power supply are you using to successfully transfer a new sound file?