Radio says A/V off. no volume on radio or cd - how do I turn AV back on or get volume

SOURCE: 6 disc changer will not eject cds==

One common solution is to disconnect the negative battery cable for 10minutes. When you reconnect, the stereo should reset itself and allow you to eject your CD's . Best of luck!
Greg

SOURCE: 2004 Chevy Trailblazer radio and CD player works, but no sound

if you have installed a new cd player in there then the propblem could be that your speaker wires and either touching each other or grounding them selfs out.. pull of the cd player and check to make sure all the speaker wires are covered properly and no bare wires are exposed.. if you still have a factory cd player in it then you will probably need to take it to a dealership to have it checked out..

SOURCE: Radio volume knob turns but won't change volume.

It 's the unit. bring it to a repair facility( fairly easy to remove) and have them do the repair . Its a lot cheaper than buying a new unit. If you decide to do this let me know and I'll tell you how to remove and install the unit.

SOURCE: ML320 2003-FM radio not working except by turning the volume to maximum and it can only be heard faintly. The AM, cassette, Cd and phone work fine at normal volume. Any ideas??

i was wondering if you were able to find a solution for this. I am currently having this same problem with my vehicle (as a few others as well). if you could please let me know, id greatly appreciate it. my email is [email protected].