Any suggestions what to try next?
Do you have a voltmeter? If so, measure your input voltage by putting your red (+) probe on the + PCB pad and your black (-) probe on the - PCB pad. What do you read for that voltage? Then do the same with 5V and 3.3V and let us know what you see for each of the two voltage rails. They should be within 5 percent or so of their expected values.Cris, That didn't work. I have not been able to communicate with the device to update the firmware.