I recommend getting one with at least a 18 month warranty.įaulty SMC. Given that the OP's machine is a 2012, it would mean the battery is pushing 5 years now which is around the EOL for this battery.
If you're not sure, has an excellent tutorial.
#REPLACE MAC PRO POWER SUPPLY REMOVAL HOW TO#
If you already know how to open the MBA and disconnect the battery, you are halfway to replacing it. If it continues to fail, you probably need a new battery. If you can power the MBA in this manner, try resetting the SMC then reconnect the battery. What could be happening here is that the battery life has degraded to the point where it will not hold a charge above the threshold to power on the device. As the OP described, once the battery was disconnected, the machine booted fine. There are two possible causes these symptoms:įaulty Battery. Update: To clarify the symptoms when the Air doesn't boot up: black screen, no fan, no keyboard backlight (or anything else that would indicate that it is running). Have anyone heard of this problem before? Are there some specific components on the logic board that could be causing this? (I am not sure if it's worth having this repaired through official channels.) The weird thing is that everything (including the power button, going to sleep etc) just works, just when I shut down OS X completely, the same problem occurs (all the times), making it necessary to unscrew the bottom and do aforementioned procedure again ) Much to my surprise it did boot up just fine after: disconnecting the battery, pressing the power button (with AC not attached), reconnecting the battery, reconnecting AC power, and pressing power. Then in a last-ditch effort I decided to open it up. I clearing the SMC by pressing Shift-Control-Option, which didn't have any effect. The battery would charge, but pressing the power-button just wouldn't have an effect. I have a bizarre problem with my 2012 MacBook Air 13":Īt some point, a couple of weeks ago, it suddenly stopped turning on.