I signed up to say thank you for this thread. Specifically to the posters who opened the case and found the battery cable loose. My cable was not inserted. It was just sitting on top of the connector.
I got the device yesterday, plugged it in to charge and it still showed 0% this morning.
In addition to the screen flickering, random static and failure to power on sometimes, I also observed the following when it powered on:
- The battery status under settings was listed as "unknown"
- The welcome screen said "connect to charger" even when the device was plugged in.