better late than never but to replace the jack plug is quite a fiddly job cos I believe the m/board has to be accessed. I am attempting this at the moment with a MIM 2220. I have so far removed battery, all the screws underneath (including 1 hidden under the yellow laser sticker). Removed hard drive and two silver screws underneath. This nearly releases the top with keyboard but there is resistance felt above the optical drive caddy and also at the front of the keyboard (by the F8 key). At this point I am stuck and if anyone else reads this and can help, I would be eternally grateful!
Dave Crawley, November 2009