No sign of life : Disconnecting the battery reset the Firmware and solved it
Judging by the Charger getting hot : It charged fine . Replugging it drew ~220mA for 15 seconds than 0.00 = Bat. IC negotiations.
Key combinations didn't solve the problem
Opened to inspect the board but it looked mint ( <2Yr old device ) , opening involves disconnection the Battery. Battery measured 4.2V .
Decided an hour later to reconnect the Battery and check On/Off - maybe the Firmware was reset as it does in laptops ( needs V to keep the settings )
Works fine
Judging by the Charger getting hot : It charged fine . Replugging it drew ~220mA for 15 seconds than 0.00 = Bat. IC negotiations.
Key combinations didn't solve the problem
Opened to inspect the board but it looked mint ( <2Yr old device ) , opening involves disconnection the Battery. Battery measured 4.2V .
Decided an hour later to reconnect the Battery and check On/Off - maybe the Firmware was reset as it does in laptops ( needs V to keep the settings )
Works fine