This is a replaceable power port which makes your job easy its not soldered to the motherboard. All you have to do is tear down the laptop till you get to the point were you can see the port and remove it. and replace with a new one which can be found on ebay
http://www.ebay.ca/sch/i.html?_odkw=HP+Pavilion+dv9000+charging+port&_osacat=0&_from=R40&_trksid=p2045573.m570.l1313.TR0.TRC0.H0.XHP+Pavilion+dv9000+power+jack+port.TRS0&_nkw=HP+Pavilion+dv9000+power+jack+port&_sacat=0
there is a guide on ifixit though it is incomplete it should help with the disassemble
[guide|12687]
Hope this helps