I am having problems with my '96 GLE stereo. I have a CD/Cassett/AM/FM set but lately it only works when the weather is hot. During the fall and winter, my radio only comes on after I've driven about 30 or so minutes (after the car warms up). I am not sure if its a common problem and also wondering if there is a fix for it or should I just replace it? Any comments would be appreciated.