Problem with Samsung P10 power socket.....

[gizmo.1484]

I had a Samsung that did the same thing, all I did was cut the jack off and soldered the cable onto the connection on the circuit board. Worked for a couple of years. Just had to live with the cable being permanently connected to the laptop. I found it the cheapest option as it was going to cost over ?100 to fix a ?300 laptop

That's what i was thinking of doing, but need to know which point is + and - and which one is gnd......As i have gone and lost the power socket.
If anybody can tell me from this picture i would be most greatfull....
Samsung P10 power socket..jpg or this one pj24net.jpg