원문 게시자: Richdave ,
Measure the Output of the AC adapter. It may have failed or the cable is damaged so the battery will not charge. Even a flat battery will give a voltage reading with a Hi impedance load like a voltmeter. The battery voltage will likely drop significantly when you put a load on e.g. power up the laptop. You could also try measuring the voltages on the wires on the logic board that come from the DC in board as the DC in board or it's cable may be faulty.