Bummer! Was working one second; completely dead the next. Checked fuse in car cord, tried different power outlet, and even replaced batteries, but to no avail. Unit seems to be dead, dead, dead! Got it as a Christmas gift in December of 2004 and registered it on their site, so fortunately it is under warranty. I have sent an email to Garmin to get an RMA so I can get it repaired or replaced. Anyone have any ideas to try, or can relate their experiences in dealing with Garmin service? Garmin said something on their website about needing original receipt, but I am not sure I can lay my hands on it. Plus I registered it with them so I would think they would not need it.