Black frames H3D II 39

[Valtteri]

Hi!

My H3D 39 II makes completely black frames both tethered and on card. Tried out 3 lenses and tested my camera with another back and it worked then I tested the back with another body and had the same problem. So, any ideas what could be the problem? I also tried to check all the connectors. And this came out of the blue, last shoot vent good all the way and now the first frame was all black.

br. V.