Macbook Pro 820-3115-B smoke after repair!

Discussion in 'MacBook Pro' started by elitetek, Mar 25, 2014.

  1. elitetek macrumors member

    Aug 21, 2012
    I had successfully cleaned a macbook pro 13" 2.9GHz i7 logic board (820-3115-B) with a water spill on it. the unit fired up installed mavericks and passed all asd tests. Two days later I tried to power it on, I heard the unit turn on and then SMOKE. I opened up the unit and found where the all that smoke came from. If someone can help identify the crisp components or supply me with a Hi Res picture of the same area off a working unit that would help me greatly.


    Thank you
  2. Chancha macrumors 6502a

    Mar 19, 2014
    This ifixit guide seems to have it. The image at step 16 seems to show the same place on the right side (not sure if direct link works)

    Edit: upon closer inspection, the logic board is similar but probably not the identical make of yours. I search thinking yours is the Mid 2012 i7 2.9 13", A1278. Not familiar with the logic board make.
  3. elitetek thread starter macrumors member

    Aug 21, 2012
    Thank you Chancha for your input. the area is same. Now i had to find the values of the components that were blown off and the small ic chip..if anyone can help please do.
  4. Gav2k macrumors G3


    Jul 24, 2009
    There was still liquid under the chip. If you manage to repair the board clean it with contact cleaner (whole logic board)
  5. T5BRICK macrumors G3


    Aug 3, 2006
    That looks pretty bad. You're going to need to make sure the PCB isn't corroded.
  6. elitetek thread starter macrumors member

    Aug 21, 2012

    I managed to get a donor board. EMC 2554. This has also suffered from a liquid spill its missing the qfn chip but has the missing blown components. I managed to identify the small qfn CD3210AORGP (ebay link below) above the short that had also been damaged. however if any one can identify the parts and values of the components highlighted below, that would really help me.

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