now it's the 3rd time that these problems appear:
I phoned the german repair service called "bits & bytes". They told me that I have to pay now for the repair service.... out of warrenty.
They were totally unfriendly. The Line 6 Service in Facebook send me a dealerfinder to resolve the problem.... ??????
Had also a lot of dropouts.
Now I am done with this mic and this company Line 6.