mine did. stock 6 disk rockford unit. after a quick stop at a gas station, i got back in it, fired it up, and nothin. it was on, i could change channels, switch to am, dvd, aux etc. but no sound came out. turned it off and back on (the radio), nothin. once i got where i was going, i shut the truck off and fired it back up and it was working again :huh: weird... anybody else have this happen? i hope this isn't a sign of things to come...