A WIO Terminal seems to have failed on me… blank screen, no LEDs lit, case warm. It had been running quite happily for several days, monitoring two I2C grove sensors (ATH20 and Miltichannel Gas) and reporting via WiFi + Mqtt; powered from a standard USB wall-wart.
Disconnect sensors: no change.
Different power supply: no change.
Plug Wio terminal into computer USB reports “Power surge on USB port.”
I assume something in the Wio’s USB-5V power has failed. Any ideas for how to investigate / fix please?