Origineel bericht door: lemerise ,
First be sure to use a known working Apple Magsafe charger not a chinese fake. Also as stipulate by arbaman the I/O board could be bad. You can power up the computer with battery disconnected and check the battery socket pins with a multimeter. I think you should get DC 12 volts on the power pins and 3.4 volts on the data pins. If you get good readings the battery is probably dead.