Macbook/Water/Won't Power - Help me fix it!

Discussion in 'MacBook' started by nickXedge, Jul 7, 2009.

  1. nickXedge macrumors 6502


    Feb 13, 2008
    Long Island
    I have this Macbook I recently acquired that I was told has water damage. I don't know how much or where specifically. It won't turn on at all. When plugged in, with and without the battery, the magsafe connector turns green as if the battery is full. If the logic board was fried, it would still post wouldn't it? Is it probably just the magsafe connector? I'm going to remove the logic board tomorrow and clean it with some rubbing alcohol as I've seen recommended on here, with success. Any other ideas? Thanks so much.
  2. NewMacbookPlz macrumors 68040


    Sep 28, 2008
    Realistically, it can be 1000 different things.

    Could be a general short in the logic board, could be salt build up on a circuit somewhere from hard water, could be a wrecked EFI's almost too difficult to speculate.
  3. l.a.rossmann macrumors 65816


    May 15, 2009
    a) Rubbing alcohol already puts you behind the curve. Use 99% or don't bother. Search eBay. I like ultrasonic cleaners like the ones for jewelry, howeverm if you are patient, 99% alcohol works great, with a fresh, hard toothbrush. Do not brush back and forth, brush from the center of a particular location outwards.

    b) Stop plugging it in. Each time you do you potentially screw up something else.

    c) Do not just clean. It is not the cleaning that is important, but rather, the drying. You can keep the board next to the window or let it dry for weeks and it can still be screwed up. However, half an hour next to a drying tool that does not apply heat to the board will get the job done. It was once I realized this that I had a 100% success rate on the water damage stuff.

    If you do not have access to professional tools for part C, a household dehumidifier will work in a pinch. After you're done going through the board with a fine but strong brush & 99% alcohol, hang the board in front of the dehumidifier's intake. Change the side facing the intake once an hour. Do this for about six hours. If you feel the air moving into the dehumidifier from outside the dehumidifier - if you can drop a paper in front of it and watch it get sucked onto the dehumidifier, it will most likely work.

    Do the drying right after you have done the brushing, with the board still a bit damp from the alcohol.

    Each step is important, the more you deviate from this the lesser the chance it'll work again.

    Lastly, let this be a lesson that buying broken under the impression of fixing it and having a cheap macbook is a bad, bad idea!

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