Hi, I have a MacBook air 2012 that I have recently bought paid £70 for it which I think was a reasonable price. I bought it as a dead unit with charger. The MacBook itself is in like new condition, I have checked the logic board and all other parts everything looks ok, no corrosion to the logic board i removed the battery and it looks like it has a tiny little burn mark to it on the underside (away from the connector on the logic board itself). When I plug the MagSafe in the light does not light up orange, it lights up green every 37 seconds, I've done several time tests and it always blinks green every 37 seconds, to get it to turn on you have to hold the power button and wait for the blink of the green light, while the power button is pressed instead of blinking green it will go to full green light without blinking then it will turn on. While the laptop is turned on (I'm using it now) it functions perfectly apart from it say's that there is no batteries available and once the MagSafe is removed it instantly shuts down. I would be grateful if any of you could help me. I've been told by people so far it could be 3 of many things... Battery, MagSafe or the MagSafe board. All these parts I have priced up and they are no more than £50 each. Do any of you know what it could be, even at a guess. Thanks!