Audio Systems: no sound, 2007 nissan murano, nissan murano

Question
I just purchased a 2007 Nissan Murano that has the upgraded Bose audio system with the six CD changer and subwoofer.  The radio and CD changer appear to be working fine (I see the stations that the radio is receiving and the tract that the CD is playing).  Only problem is that their is no sound at all.  No hissing no buzzing, nothing at all.  The car is like new with only 9000 miles with this one annoying problem. Any ideas?  Also since this has the 36k bumper t bmpe warranty do you have any insight whether this is covered? Thanks

Answer
we repair the audio systems in 6 nissans newfrom the dealer, they ll got water and the bose factory amplifier was damage
maybe that is the problem look for the bose amplifier in the trunk
most likely there is someone that  repair bose systems in your town, if not try this company
http://www.carstereohelp.com/strnissan.htm

or to buy a rebuild unit try  here
www.oemautosound.com