i dropped mine on cement a couple of years ago and it quit beeping. then after about a year it started beeping again ?? now it beeps about half the time. apparently it has the power to heal itself.
I think some Garmins must be possessed. For 1 full year my Garmin was in some weird mode where I would have to do a full reset never once but always twice just to get it to turn on. Then magically after a year it started working mostly normal again, except some days it just turns off randomly during a run. What the heck? Mine has also mostly lost the beeping ability, but not completely as it will still sometimes beep but just super quietly.