The ring at the volume wheel is fully blue lit when you turn the wheel. You should be able to control the volume via the wheel.
Option setting in your set up should be: BS5 - no audiomaster, BS3000 (with speakers) option 2, Beovision (?) option 0.
In my set up the BV7-40 and BS9000 are activated in N.MUSIC mode, when pressing N.MUSIC. TV screen is black. Stand is in audio position.
I had problems with the display too. You can check it by connecting another display to the DVI output of the BM5, maybe a BV7. BTW the display looks great on a BV7-40. In my case it was a faulty DVI cable that let the display look a lit dark and yellow - color blue was missing. We changed the cable and everything is ok now.
Stefan