6) IMPORTANT NOTE: DO NOT press and hold the power button to shut down the device or select shut down anytime it is connected to the charger!!! That will cause it to totally shut down, including turn off the charging processor circuitry. The power LED will go off and it will NEVER charge at all in that condition. That is why it will (usually) try to show a warning that it can NOT charge if turned off. So, just leave it alone and let it do its thing charging itself!!!
Okay, I think I've done that
So what can I do now??
My tablet has been unused for 1 week.
When I plug the power adapter into the wall outlet, it looks as described that the "charging circuitry" isn't working: The power LED is red, the power adapter stays always cold: even after 24h plugged to the wall outlet.
When unplugged, no LED are lit.
So, what can I do??? The guarantee ended 3 months ago...