I bought the device less than a month ago to replace my Garmin Edge 810 which I got tired of troubleshooting. I plugged the 830 into the wall and recharged it. Then took it for a ride today and it would not turn on, even when I held the power button down for 10 seconds. I had to do the ride without my new 830. I saw on another thread that others have experienced the same issue. Is there a fix for the 830? I can't believe this new device does not work