Decklink studio 2 NO SDI input

Hi,

I installed my Decklink studio 2 in a Macpro for use with Avid Symphony version 6.5.4 and although SDI playback is fine, capturing from a SDI source is not working.
I also tried capturing with BM media express, same problem.
Deck control is working fine, but no video/audio signal is coming in through the decklink SDI input.

I installed a spare Decklink SDI card and everything worked fine!
So I assumed the Decklink studio 2 card was broke and replaced it with a new one.
Now I got the same problem again; no sdi audio/video is coming in.
I use the latest desktop video software V 9.9.3

Config:
Mac Pro 3.1 , 8 core intel xeon 3,2 ghz
6GB RAM
NVIDIA GeForce 8800GT in slot 1
Decklink card is in slot 4
Fibrecard in slot 3
OSX 10.8.4

Hi.

I could be that the Sdi-card are only Sdi and no other input to choose from and the studio have both analog and hdmi to choose from. You must manually tell the card to look at the right input.

Have you set it to Sdi-input?

Hakan