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Mid 2009 Model A1278 / 2.26 or 2.53 GHz Core 2 Duo processor EMC 2326

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D6905 pulling v on mbp?

So I have no green light on the MagSafe charger.

I followed the rails till I arrived to D6905 which has 3.42v in pin 1 but 2.7v on pin 2 on Logic board # 820-2530.

Should I look for new D6905? (looks difficult)

Can I run a jumper from somewhere and skip this diode?

Already replaced all resistors and capacitors looking bad.

Thanks in advance.


Ответ на этот вопрос У меня та же проблема

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Did this system have a liquid spill?

The MagSafe LED is driven by SMC, I’m not sure I follow why you are focused on 3.425V G3Hot.

I would go back to PPVBAT_G3H_CHGR_OUT Q7050 si7137dp as I’m suspecting that’s your issue.

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Stopped turning on 2 years after water spill.

I had 0v everywhere, i replaced r6905, c6990 and c6999 now i have 3.6v and 17.2v on both sides of r6905 and then i found that on d6905 thats why i thought problem was there. Q7050 and that area looks alright.



All pins have 1v less pin 4 which has 0.22v.

Thats it?


I would start there.


So that comes from CHGR_BGATE in U7000.




VDD 0v

PP3V42 G3H 1,7v


Btw thanks for your help man


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Jorge будет вечно благодарен.
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