I travelled the first week of December 2014. The second week I sent transmitter and receiver via my dealer to Sennheiser. Though there were Christmas and new year in between I am still waiting to get back the Sennheiser stuff. Meanwhile I found out that the tiny Røde PinMic cable also had an issue. It was a call to the service center in Germany, I sent them the cable and after just a few days I got it back – new cable – for free! I wish Sennheiser would have had at least the speed to fix the problem as Røde did.
Just an update: Today (20.01.2015) I got my Sennheisers back. It took them just five weeks….Mehr