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T470s USB C Replacement
(lemmy.sdf.org)
You can buy a replacement port for about $10 on ebay, but you will need a good SMD rework station to solder it. The port is soldered directly to the motherboard. Unless you have the equipment and experience to replace it, I would suggest taking it to someone that does.
Luckily the T470 still has the normal charging connector and a dock connector, so you can still use it. The later models can only be charged by USB.
I had one fail on my X1C, and the only way to fix it would be to find another USB-C port for that model and solder it onto the board.
The last times I've bought ThinkPad motherboards they were under $100...
IBM and Lenovo ThinkPad laptop enthusiasts!