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Early 2011 Model: A1278 / 2.3 GHz i5 or 2.7 GHz i7 processor

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The computer does not switch on and fan starts turning non-stop!

The computer does not switch on and fan starts turning non-stop. No lights on screen and only fan turns.

Any idea what can be?

In a computer repair shop (apparently very bad) just only told me that motherboard (logic board) is kaput. Is it really only the motherboard?

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3 Answers

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To me it sounds like the battery or the logic board

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I ordered a logic board. lets see

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@pedrofavaios

Alright get back to me when you get the board

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The ramped up fan tells me SMC encountered a severe problem with one of its sensors! Basically, SMC pumps up the fans RPM’s to make sure you don’t cook your system. So you clearly have some sort of logic board issue. It could be the board or a sensor input that’s causing an issue.

As for anything else… Given the age of the system the battery if its the original is way too old!

So, consider the costs, you might be able to find another 13” MacBook Pro system which is working for less than buying the two needed parts.

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Hello Dan, thanks for your feedback.

I have replaced the battery last year. Even if the battery is damaged, is the computer supposed to work normally when connected to the power point with the charger?

I have found a logic board for 60 euros with delivery costs. I have to wait until 22 Feb for delivery. Once received I try to replace it and see if computer works (hopefully).

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@pedrofavaios - The issue of power - you can run your system without the battery connected just using the MagSafe charger. If that is your question. But don't expect to run anything heavy as the amount of power is not deep enough without crashing.

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You can try resetting SMC and PRAM by following https://discussions.apple.com/docs/DOC-3....

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Did not work. Computer does not start and only Fan starts spinning non stop.

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Pedro Goncalves will be eternally grateful.
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