Chosen Solution
Early 2015 11 inch macbook air Macbook doesnt power on or show any signs of life besides charge light. I took it apart and saw no obvious signs of any damage. I was told that it needed a logic board replacement, but wanted to see if there is another option. What I did find, is that the power button does nothing, but when I short the jumper inside the light goes from orange to green and then back to orange again after a second or 2 I tried a pram and smc reset with no luck. Also tried disconnecting everything with no luck. I left it sit for a bit all unplugged with nothing either. Anybody know what might be wrong, or anything to test Update: 8/9/19 Did some voltage testing on batt connector. Not sure if this is how it is supposed to be, or if this helps anyone. From what I can gather, 1 2 and 3 are negatives and 7 8 9 should be positive from the schematic, although it is switched where 7 8 9 are neg and 1 2 3 pos. But I have it looking at the connector, with the dc in on the right, going from left to right (pin 1 is far left) Dc only 0v 2 . 0v 3. 0v 4. 0v 5. 3.5 6. 3.5 7. 8.6 8. 8.6 9. 8.6 Battery Only 0000000 8. 0.7 (Was about 1 but dropped for some reason) 9. 0.7 (Was about 1 but dropped for some reason) Dc plus Battery 0000.233.33.3 7. 0.23 0.230.23
If you’re up for testing you can probe battery pins and see if you have the 8v and the 3.4v power lines. If you do you can rule out I/O board and you’ll know main power lines are up and running. If you have no voltages it would be worth to try and replace the I/O board, such repair attempt would be quite cheap and easy to perform. In case of failure a component level troubleshooting or board replacement would be the two alternatives.
My MacBook has the same issue- when it shuts down completely or the battery dies, it will not start, and the charge light behaves the way you described. If I disconnect the power adapter and the battery and then reconnect the power adapter and then the battery, in that order, it reboots on its own. I have spent countless hours troubleshooting and this is the best solution I’ve come up with. I call it my “special needs Mac”
