AC adaptor port in laptop is broken

It is definitely replaceable and is not to complicated. There is no need for soldering. You just need to swap out the DC jack cable harness. I located a part for $10 off eBay. This will at least give you an idea of what the part looks like and its cost. You can surely find them else where if you do not like eBay. You can use the guides on this site to help you disassemble the laptop enough to gain access to the DC jack cable harness. Then you can put the new part in the same way you removed the old.

Link to the part: http://m.ebay.com/itm/DC-POWER-JACK-HARN...