I have a 2006 J385. I have loved the built-in stereo system. A couple nights, when it was very cold, the stereo failed to power up. I am guessing it could be something like a fuse to the stereo system. The pop up speakers do have the small red light, so I think they are getting power. Can someone tell me if there is a fuse to just the stereo and how to change it. Also, any other ideas as to what it may be?