Early 2011 model, A1278 / 2.3 GHz i5 or 2.7 GHz i7 processor.

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The screen goes to sleep and will not wake up

Hi Everyone,

My MacBookPro, early 2011 started to behave weird. It would not lit after going into sleep mode or blacked out unexpectedly when on battery.

It landed at service and was diagnosed with moisture trace on logic and mag safe board. Yeh, right that was a small coffee spill some months ago, with no immediate negative effect.

As I was offerred a repair cost exceeding the cost of new mid2012 MacBookPro I declined it. I changed the energy settings to never go to sleep but unfortunatelly it still dies out occasionally under service even if on cable. What I can see is that the system is working, as at certain illumination and angle I can see in very pale grades of gray the correct response for input - it is as screen is just not lit.

No way I need to Ifix it :)

I find iFixit parts cost worth giving a try. My questions therefore are:

1. if from above description is it possible to determine which of the named parts is responsible for such behavior. What am I apparently hoping for is that it is just mag safe board responsible for the problem and I can save logic board cost? So do i need both or hopefully just mag safe?

If i need the logic board the other question is:

2. if late 2011 boards can be installed in stead of early 2011. in other words i consider upgrading the computer

thank You for your help

So do i need to purchase both boards and if i can use late 2011 logic board instead of original early 2011

thanks for your time, regards

Answered! View the answer I have this problem too

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Please confirm that this is your machine:

Apple MacBook Pro "Core i5" 2.3 13" Early 2011 Specs

Identifiers: Early 2011 13" - MC700LL/A - MacBookPro8,1 - A1278 - 2419*

If so, then yes the board can be upgraded. Before buying a board I would replace the MagSafe board, I would also run AHT on the machine by starting up from your original system installation DVD and start up holding down the "D" key and test it. Also run Coconut battery on it. http://www.coconut-flavour.com/

Did the coffee enter the machine through the keyboard? How did it get on the logic board?

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thank You for answering.

Yes it is A1278 model.

I am trying to figure out whether it is Logic or MgSafe board that is responsible for the behavior. Which is now a random display black out, regardless if on ext power or on battery. As I wrote earlier, with certain angle and illumination I can see normally working (i.e responding for input) screen - it is just not lit.

I would obviously be happy to avoid logic board cost.

I wonder if with the description of the behavior at hand is it possible to exclude logic board and blame, hopefully, magsafe card only? Is there any diagnostic software or routine to diagnose hardware components?

It is also a good question with the coffee spill, which rather was drops from a splash actually. I have a feeling that is the easiest way for service to diagnose with moisture trace - the harder reachable part the better.

thanks again


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maciejgrosz will be eternally grateful.
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