Hi, Arne!
Your assumption ist right. Like the M-LINK-RX-pros (9 , 12 und 16) the WST pros (12 and 16) also have fuses on each channel. So if one of your outputs does not work anylonger, it is very likely that the fuse has done its job. Unfortunately for most users that means asking the service for repair - it is not easy to replace the fuse as these items are SMD and very small.
w/r
profimc
