Trying to use an AudioMoth 1.2.0 that has been used troughout year 2021.
With switch on USB/OFF, when the 3rd battery is inserted, LEDs turn on: fixed red+ flashing green.
Attempted to set the time by playing chime from mobile app. Nothing happens.
When the switch positioned on CUSTOM, both LEDs go off.
Switch repositioned on USB/OFF or DEFAULT, LEDs still off.
Left for the the night with the switch on USB/OFF, next morning the batteries are completely drained (0% displayed on the charger).
This AM was configured with the same paremeters as a couple of others that are all behaving as expected. SD card has free space and tried with another SD known to work fine.
Is this a known behaviour ? Am I missing something ? Any clue to solve that ?