MSA 1510i second controller doesn´t boot

[ZEHETAL]

We got last month a second controller for our old MSA1510i. We powered down the whole stuff, added the new controller, the new iSCSI interface and a new backend SCSI interface in the places mentionned in the Configuration guide.
Then we started the MSA, the first controller was booting without any problems. The second controller is showing the LCD version, the four LED´s on right lower are showing up and then the top left LED is green and thats it. Nothing more.
The firmware on the older first controlelr is 1.32.202 adn seems to work allright. We have attached a single-ended MSA20 with 12 500 GB SATA harddisks in it.

Is the new controller failed or are we mssing some point?