Quote:
Only the registered members can see the QUOTE Contents. Please Login OR Register.

That is realy difficult to say with only pictures. Do you have any tool to measuring at least if there is tension behind the power connector ?
These connections are quite often the problem. I'm not sure if there is a separated power connector or only via the USB.
If your device still work when connected with your PC or external power supply I'm affraid the regulator is out of order, difficult to repair with all these SMD components