Hi everyone. I bought and installed an in car Sony XR-CA370X Cd Multi-changer yesterday. When i put on the radio i can turn the volume up and down fine but when i change it to the cd the volume comes on really loud and if i try to turn it down the volume goes off. the cd still plays but there is no sound until i press the volume up button once it goes really loud again. can anyone help me as to what to do to fix this and if not can you give me a link to someone who might as i have searched the internet all day yesterday and can't find anything. Thanks. Brian.