We have a Clarion Marine Radio system on our boat, which we have had for several years. A few days ago we were having a problem adjusting the volume in the helm area of our boat, so my husband turned it up he thought on the helm, but instead it turned up the volume in the cabin to a very high level, and then the radio had no more power and won't do anything. We don't have a manual that would tell us where any fuses would be, and we don't know what to do to fix it.