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MacBook doesn't turn on. Tried every combination and to disconnect bat

I tried every keyboard combination but it didn't turned on. The fan is working but it doesn't light up the Mac logo or the keyboard. interestingly if I connect a phone it charges. I tried to disconnect the battery, the SSD and the LCD. But it didn't worked.

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Using a flashlight shining in through the lids Apple logo are you able to see the faint image of your desktop and its icons?

Are you seeing your desktop on an external monitor?

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Thank you for your answer. I tried as you suggested to use a flashlight but I didn't see anything. And I tried with an external monitor and I obtained the same result unfortunately

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It didn't reboot. I pressed the wrong button sorry. Thank you for your reply

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Give this a shot. Disconnect the battery and Mag-safe adopter. Press and hold the power on button for ten seconds. Reconnect the battery and then the mag-safe. This should give you a spontaneous reboot. If not go to @danj answer.

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OK, not good ;-{

Your logic board will need repairs or you can just replace it!

Here’s the guide: MacBook Air 13" Early 2015 Logic Board Replacement

MacBook Air 13" (Early 2015) 1.6 GHz Logic Board图片

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MacBook Air 13" (Early 2015) 1.6 GHz Logic Board

$169.99

MacBook Air 13" (Early 2015) 2.2 GHz Logic Board图片

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MacBook Air 13" (Early 2015) 2.2 GHz Logic Board

$349.99

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Thank you for your answer. I don't think that my old Mac is worth the expense. I really appreciate your help and answer

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