On Friday between running errands my aftermarket andriod radio stopped working. I figured it was probably a blown fuse. I haven't driven it until I went to start it up today and the battery was totally dead. I haven't gotten a chance to check fuses or anything. Is it possible a head unit could go bad and take out my battery? I have a powered sub and a seperate 4 channel amp hooked up as well, but those have been on for a number of months now without problem, and I didn't see any wear/rubbing where I would suspect with a quick inspection of the power cables.