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Mid 2010 Modell A1278 / 2,4 oder 2,66 GHz Core 2 Duo Prozessor

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No Power Not booting

Plug in magsafe charger indicator always green, fan not spinning, measured voltage across fuse on board with magsafe charger plugged in (it reads 19volts ), I'm pretty decent with fixing iPhone logic boards, this is my first with MacBook logic board.

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I’m impressed the logic board is so clean!

I do see an area that needs investigation around the DC - In Board connector.

At this point you need to grab the schematics and board view drawings to trace out the power rails. I’m suspecting your issue is within the MOSFET power switching logic. Using a DVM you should be able to see what’s happening. Often times the knock-off charger has damaged them.

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@danj thank you for the reply, I'll appreciate if you can point me in the right direction where I can get a good schematics for MacBook logic board

von

@n3dtech - Locate the logic board number it should be either 820-2530 or 820-2936 the images you posted are too blurry for me to ID.

Then search the internet for number and Schematic

von

Okay thanks.

von

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n3d Tech wird auf ewig dankbar sein.
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