@Natursuntur So I got the camera back from service. They changed the shutter again. The diagnosis was "failure of unoriginal shutter". Well at least now I know where to do the service next time...not unauthorized for sure
Mine was auth. Dealer by the way. It is better to buy mark 3 or 4. Even better choice is to buy Nikon, regarding my experiences with 3 dslr/slr experiences in 10 years. My mark 2 is ok for a year but I never put it into bag and store it near an anti moisture chemical.