Originally Posted by jppe

I don't think mine is rattling. Good luck getting yours quieted down. I've come to really enjoy having the 305.

I about paniced the other day when mine would not power up. I went to the Garmin troubleshooting guide online and read where the cause for a unit not turning on is usually because of an extremely low charge. It told me what buttons to push while the unit is plugged into power and it magically came back on. This was the night before a big event and I about croaked.......I probably need to find that info again and print that out and put it in my travel bag........