原帖由： GMAN463 ,
Your problem is probably the jack that is soldered to the motherboard. Either the solder is cracked and loose or one of the pins that carry the current to the motherboard is broke. It can be fixed but is a hard task to do I have done this repair a few times for people. It requires a compete breakdown of the laptop to the motherboard and good soldering skills. Most computer repair shops will not do this type of repair. But first check your AC adapter to see if the problem is with it.