I have an older USA 1 with the 10 disc CD changer in my 69 Mach. I parked it and everything was working. The last time I drove it I have no functions on the unit. The display lights up and I can hear hissing in the speakers when I turn the volume up but there are no stations showing on FM or AM. I also can not operate the CD changer. The magazine is in it and won't eject. I sent the unit to CAS for repair and it still does the same thing as before. I didn't realize until today that the CD magazine won't eject. Has anyone else had this type of problem? I know these units aren't that good, I'm just wondering before I pitch the whole works in the trash. Thanks.