Dell Latitude C400 Notebook "12 old pic year" Questions

old, I would not repair it, put some blue tack around the connector to make the connection secure/firm, and put the repair costs towards a new laptop. Here is a tutorial on how to resolder the DC jack

...old jack and solder some stranded 12 AWG wire it's place. Use wire that's between 2 - 4 inches long.Using black and red wire, solder the black wire to the location on the board where the outside ...