MacBook air doesn't boot
I test my magsafe adapter (45watt) and the output voltage without any load is 6.32v.Is this acceptable or not?I am asking this because my macbook air doesn't boot.The white led opens for some seconds then turns off for some seconds and then turns on but nothing on screen!The fan is working!
6 volts is ok until the charger is connected to the macbook. Then there's a handshake between the charger and the SMC to provide 18v to the computer if all the subsystems are OK, if so the magsafe tip show the green light via the sens line. The 18v is distributed to many components but the computer needs 3.42v to startup (G3hot rail).
You description of the issue is not enough precise and we don't know if the computer is really booting and if your problem is a screen lighting problem or a power issue. Does the machine power off after a few seconds or it stay on ? Is the hard drive doing a booting sound (you can hear it working) ? Was the macbook in contact with liquid ?