try a new cable. That fixed mine I got it off Amazon. If that doesn’t work you’ll have to try and find somebody who can solder a new USBport on it or get a new main board if you can find one to match. Or even do some swapping like the following link explains this probably requires extremely advance soldering skill.
https://www.youtube.com/watch?v=LpImzz2pr2s
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I realize this is a pretty old post but I came along this today.
try a new cable. That fixed mine I got it off Amazon. If that doesn’t work you’ll have to try and find somebody who can solder a new USBport on it or get a new main board if you can find one to match. Or even do some swapping like the following link explains this probably requires extremely advance soldering skill.
https://www.youtube.com/watch?v=LpImzz2pr2s