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  1. #1


    Member Since
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    Is the serial number stamped on the logic board?
    I sold a MacBook Aluminum on Ebay a month or so ago. It booted up but had screen problem.

    The seller promptly told me it did not turn on. He sent it back and I am trying to figure out if he had switched out the logic board on me. Also, did the MacBooks ever come with a "Hynix" brand RAM?

    TLR: Sold a MacBook that booted but with screen problems, buyer says it does not turn on. Trying to see if it is the original logic board.

  2. #2

    MacDude121's Avatar
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    Unless the ram had been upgraded before/when you had it, the ram should have something on the sticker that says "Apple"

    As for the logic board serial #, I'm not sure.

  3. #3

    osxx's Avatar
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    The serial number in About This Mac is the one on the logic board when you have Apple replace it I was told they can flash it back to original so if your receipt does not match then you have your answer. Apple used both Samsung and Hynix but as was pointed out there should be an Apple sticker on it.

  4. #4


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    Problem is that I can't boot it now to check "About This Mac".

    I don't quite understand how it can't all of a sudden boot. I should not have accepted it back, dumb move on my part.

  5. #5


    Member Since
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    Guys, thanks for the responses.

    I took the MB apart and noticed there is a DOA sticker on the underside of the logic board near the speaker.

    Keep in mind, when I had it, IT BOOTED. There is no way these normally come with a DOA sticker, do they?

  6. #6

    harryb2448's Avatar
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    In hindsight should have advertised for parts only with a problem. Then the buyer would have no comeback on you.
    Hang on to those original install discs like grim death! Using OS X.7 or later make a bootable USB thumb drive before running Installer!

  7. #7


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    I advertised it as bootable with a screen problem. He acknowledged the screen problem.

    I advertised it "AS-IS" but still took it back. Complete blunders on my part.

    I've looked at logic boards on eBay and none have a DOA sticker on it. I will bring it up to the buyer.

  8. #8

    MacDude121's Avatar
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    Quote Originally Posted by saysana13b View Post
    I advertised it as bootable with a screen problem. He acknowledged the screen problem.

    I advertised it "AS-IS" but still took it back. Complete blunders on my part.

    I've looked at logic boards on eBay and none have a DOA sticker on it. I will bring it up to the buyer.
    Doubt he will reply now, it sounds as he took your good logic board, swapped it out with one of his bad ones, and sent it back and claimed that it didn't boot.

    Crafty on the buyer's (or scammer's) part.

  9. #9


    Member Since
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    I should add that I have not refunded him yet. So the game is in my favor if he truly did scam me, I have both his money and the MB.

  10. #10

    osxx's Avatar
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    Check your numbers on the outside of the case against the board. MacBook: How to find the serial number

  11. #11


    Member Since
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    The only numbers on the board is where the RAM slots are. This number shows up no where on the box or actual MacBook Aluminum unibody casing near the battery.

  12. #12

    harryb2448's Avatar
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    Enter that number on this link and see what it turns up.


    Apple Serial Number Info // Decode your Mac's serial number!
    Hang on to those original install discs like grim death! Using OS X.7 or later make a bootable USB thumb drive before running Installer!

  13. #13


    Member Since
    Oct 21, 2010
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    Thanks for that link.

    The serial number on the logic board, near the RAM slot is this: W88418GCS5W6A, that is not a searchable number

    The serial number on the casing is different (3484198W1AQ). It says the laptop is refurbished. Maybe that is why it has a DOA sticker?

    Then again, IT WAS BOOTING WHEN I HAD IT!! So it couldn't have been DOA! Even the original owner said it booted.

    I do not want to accuse the buyer of switching out logic boards unless I am certain he did.

  14. #14

    harryb2448's Avatar
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    Suggest putting it down to experience as it is a no win situation alas. You cannot prove it was working, particularly if you sent it by mail or freight, and if it was a pick up, was it powered up when the purchaser received it?
    Hang on to those original install discs like grim death! Using OS X.7 or later make a bootable USB thumb drive before running Installer!

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