Hi Dave, you can replace the whole circuit board that the charging port is soldered on, or if you can solder you may be able to just replace or resolder the usb charging port connector onto the circuit board.
You can find these parts on numerous sites. I have linked a few sites that have the part/s to give you an idea.
http://www.ebay.com/sch/i.html?_from=R40&_trksid=p4712.m570.l1313.TR1.TRC0.A0.H0.TRS0&_nkw=HTC+One+SV+charging+port&_sacat=0
http://www.etradesupply.com/htc-one-sv-charging-port-pcb-board.html