Wednesday, 7 October 2015

Need help with unresponsive USB port



My Z3C's USB port has become unresponsive, it wont charge the phone nor connect to a computer.

The phone itself works as it should, apart from the USB.

It does sense that it is plugged into a charger when in an off state and boots into the battery charging screen however no charging takes place and there's no animation of the battery icon or change in the percentage. The magnetic charging port does work though.

I can't get my computer to recognise the phone in either standard mode, fastboot or flash. However when connected by USB I can get the phone into fastboot (steady blue) or flash mode (red/green flash), it's just my computer doesn't pick up anything.

I've tried several cables, chargers and computers so all that can be ruled out.

I've verified the continuity between the end of the USB port (that connects to the computer/charger) to the pins soldered to the main board of the phone. Everything seems fine. I reflowed the solder of the USB connector just to be sure.

I'm at a loss, anyone got any ideas?



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