Wonder if anyone could help me (and my dealer) with a little technical advice? Until recently, my audio system consisted of a Beogram 5500, Beocord 5500 and Beomaster 5500 feeding through a Beosound 2300 to Lab 5s front and Lab 3s rear. Having completely upgraded my system, including a new BV4 65" and Beosystem 3, I've now substituted a Beosound 9000 Mk 3 for the Beosound 2300. Problem is I now can't get any sound from the turntable or cassette deck, although remote control of those components still works fine. Any solutions?