The 376c finally stopped charging. New batteries do not charge and I'm down to one full Battery left. I would like to think it's due to the firmware update that I applied a couple days ago, but it doesn't even power on with the power cord plugged in. That makes me believe that the power board inside is bad. Does anyone have a line on circuit boards for the 376c or a repair shop that still has parts (since Garmin stopped making parts last year)? Thanks!