Hi there and welcome
This can be an issue with the Firmware, so I would first like you to do this please.
Remove the charger from the Garmin and hold the power button to off for 35 seconds.
Release, then connect the charger and try to turn on the Garmin.
Let me know the results please
Thanks, ***** ***** of the device did not come through.
Do the following please
Remove the batteries from the Garmin and hold the power button to off for 35 seconds.
Release, then connect the batteries again and try to turn on the Garmin.
Thanks, ***** ***** is then confirmed
It is the internal mainbaord that has faulted. The circuitry has been damaged
I am really sorry about this and you are going to have to replace the unit, it is not feasible to get it repaired as the mainboard replacement will cost about the same as a new unit, except you would only get a limited warranty.
I am really sorry about this, and if you have problems, or would like any additional information or assistance, please do not hesitate to let me know.
And if you can take a second to rate my service, that would be greatly appreciated.