How much is the radio going to cost to repair? on 2003 Mercedes-Benz E320

How much is the repair cost of a radio and what needs to be done to repair the radio? The radio stoped working when I pushed a button to change from fm to am. There is no sound. The radio comes on and than goes off. The button to raise the volume does not work now.

Asked by for the 2003 Mercedes-Benz E320
I suppose it is safest to check the fuses first to ensure they are OK. There is a website that has instructions on how to remove the stereo for repair
Google Mercedes factory stereo repair and your area and see if there is a repair place in your area. Call around see if there is a common problem with this radio , they will be able to give you a more accurate estimate for repair.