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Verkaufsstart Juni 2012, Model A1278. Intel Prozessor mit Turbo Boost

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Need to re-solder some Resistors & Capacitors - Water damage

Hello, my friend gift me her MacBook Pro mid 2012 13" water damaged.

(Magsafe blinking light - no power on)

I have checked and cleaned the logic board but there are missing the following:

  • R 5369
  • R 5099
  • R 5053
  • R 5076
  • C 4905
  • C 4910

Where can I buy ? How can I understand the value of parts?

Thanks

Update (11/07/2017)

Also missing - ARE THEY REALLY NECESSARY?

  • R 5339
  • R 5349
  • R 5290
  • R 5001
  • R 5024
  • R 5023
  • C 7408
  • C 7414
  • C 7415
  • C 7416
  • C 5520
  • R 5021
  • C 7419
  • C 7418
  • C 1675
  • C 1673
  • C 1674
  • C 1671

How can this system have worked if all those parts are missing?

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Those parts are there for a reason. You can do without some of those capacitors but you NEED all the resistors! You can get the values on the schematic but it would be better to buy a donor board to steal the components off of. Look for your 820- number but I already know yours is a 820-3115 and get one from china. They are cheap then just steal what you need off the other board. You will need a hot air station and a microscope.

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Thank You so much :)

von

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download this schematic https://mega.nz/#!eggVQTSQ!h-bKyiA8hM_ka.... open it with acrobat reader dc and it will let you search for the components and tell you the values

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Thanks for fast reply!

I have booted this Mac two days ago ( in SMC bypass). And it has Booted normally after I had used a new magsafe. But just one normal boot - now I have blinking Magsafe led and no Power.

Is it possible that my MBP model don't need all those missing capacitors?

Thanks

von

did you try disconnecting and reconnecting the battery

von

yes, also changed Magsafe and DC In Board. Tried any key combination and Smc reset via command line (when I was able to Boot via Smc bypass)...nothing.

von

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LORIS GIAMMARINO wird auf ewig dankbar sein.
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