what I find works is changing the input to AM, then it starts functioning again after that point. Not sure why, but it has been a consistent workaround for me.I know I'm late to the party here, but my Alpine systems audio stopped today. Nothing, NADA, from any source. But, after going through some of the threads I tried the "Pull Fuse 97" method first. Success, audio had returned. Thanks to all that has come here before me, and for all of the suggestions. Now, I'm just hoping I don't have to pull that dang fuse too often.