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2.3GHz, 2.6GHz, or 2.7GHz quad-core Intel Core i7 processor (Turbo Boost up to 3.7GHz) with 6MB shared L3 cache.

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MacBook Pro not turning on after battery replacement

Replaced the battery and used the laptop for about 30 minutes (disconnected from power) before it shut down. Now it won’t turn on again except for a cycling of the fans at low speed- it sounds like the fans are turning on and off.

I am able to get “life” from the machine if I hold down the power button while disconnected from the charger, and plug the charger back in while holding down the power button. Even then, however, it doesn’t boot to log in- however it does tell me that the CPU is working. It started cycling during one or another smc reset and nvram/pram reset. Any ideas? Thank you in advance.


Edit: coconutbatt ss added

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What is the color of the MagSafe chargers LED? Amber or Green

If Amber let it charge for at least eight hours, then try starting it again. Did it startup them?

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charged it and it turned green, used normally. Now it died again and LED is amber. Will see if it needs another reset?

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Lets get a better view of things, install this gem of an app CoconutBattery take a snapshot now while the battery is under charge (Amber) and another when it finally get to Green. Post both here so we can see them as well Adding images to an existing question

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Edited to add ss of battery status

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The battery and the charging of it looks fine! I think you have a logic board issue. Lets see if the onboard diagnostics shows anything. Restart your system and press the D key.

Reference: Mac startup key combinations. Let us know what you get for an error message.

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John N zal eeuwig dankbaar zijn.
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