Hello Dear !

I have a problem with the sound system of my ML. No sound.... on 2006 Mercedes-Benz ML350 4MATIC

I have a problem with my Mb ML (Harman Kardon) sound system. All of a sudden the sound went away from it. The navigation and the display is working fine, but no sound comming out from the system.
Could you please help me.
Thank you in advance.

CD changer still work?