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So im having this issue with my MacBook Air early 2014.
It won´t turn on unless plugged in to the charger and after booting up, i can unplug the charger and it will work fine.
Issue persists.
Any help will be thanked!
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That points to a logic board issue at charging/main power circuit. Usually that comes from a liquid damaged Mac or a poor quality aftermarket charger. One way or the other it would need component level repair or a logic board replacement.
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obviously i need a component repair, thats why im asking where to start looking. No water damage neither cheap aftermarket charger used...
Both batteries are OEM, replacement was pulled from another MacBook
If there are not obvious related causes you may try with a I/O board and relevant flat cable replacement to start with. If that doesn't help you'd need to start probing U7100 and relevant circuitry, then SMC.
Though I had 100% charge on my battery, my Macbook Air 2013 won’t turn on without connection to the power adapter. It would turn off when unplugged. I did as suggested - PRAM reset and SMC resets but the problem persisted. Figured I had to buy a new battery, even when running a Apple Diagnostis said my device has no problems. I decide to practice removing the old batteries and putting them back so I know what to do when the new batteries came. Interestingly, disconnecting the battery from the logic board and reconnecting solved the problem of needing a power adapter to run. My unit now works pretty well….
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