how to disasemble/reasemble a gateway mx 6439 laptop to fix the dc power jack?

my laptop will charge the battery but will not run on ac power, i already tried new power adapter sill did not work. i know it is the power jack. I am a computer tech but have never taken apart a laptop so i need a diagram with pictures please so i can fix it myself.

110100101108 years ago
i dont think there really is need in diagram just take it apart carefully and see if the solderings of the power socket are broken or the center pin is loose