Hi if the above dont work then you should try another new usb port just too confirm, if it is still the same then it could be the logic board power management ic not working properly, so just try another new usb port, it is possible that the new usb port you are using right now is also faulty (manufacturing defect). Also another way to isolate the problem is to borrow another same phone from a friend or any one willing to borrow?, once you have another set that the usb port is working fine, you can try using that usb port on your phone just to confirm, so summary if the other phone usb port works on your phone means that your new usb port is faulty, if its the other way round, then it is possible that your logicboard is faulty, cheers