I have a 19 jlur with the Alpine system. I have couple of problems that I get no help from the local dealers. First on occasion there is a constant tone coming from the speakers that does not change with volume control and the volume of the content I'm trying to listen to is reduced. It will reset if the car is turned off for a time not if I restart right away. Second, at times there will be no sound coming from the system at all and the only way I have found to have it come back on is to push the AM button. Of course either of these happen when I am at the dealer and I am told they have never heard of either of these problems before and they don't seem to have any interest in researching the issues. Ignorance is bliss I guess. Anybody have any ideas?