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will do tomorrow

Yeah values are resistance between pins, not to ground. Is R7906 supposed to be 2.2ohms or 2.2Kohms? Is it a typo in the schematic? EDIT: R7904 is about 7 ohm (should be 0) R7905 is 5.7 Kohm (should be 18ohm) R7906 is 2.6 Kohm (should be 2.2ohm) Thats if I can read a resistance unit properly 😅

7.5Kohm 19/20 (seems a bit high...) 2.6Kohm 21/22 No short on Q7901/02. D7903 diode mode: - positive on pin 1, negative on pin 3: .595 - positive on pin 3, negative on pin 1: .793 Should I replace D7903 and the resistors on 19/20? Sorry for all the questions, I'm quite new to this stuff!

.652 on 25 .533 on 13 .531 on 26 I will buy some more ISL6257s because I don't have them anymore ahah

After resoldering U7900, I get a solid green light. No PPBUS_G3H and U7900 gets really hot (I cannot touch it with my finger, it will burn me).

Believe it or not, that’s the absolute first thing I did even before writing on this forum. No difference. R7903 is 2.8ohms vs the 2.2 it should be as per schematic (on my donor board it’s the same thing, 2.8 vs 2.2). D7900 is .163 on one way in diode mode and 33Kohm in resistance mode the...

I’ll check again tomorrow. I noticed that if I spray some alcohol on that zone of the PCB, the MagSafe light goes out and starts blinking… could this give you a hint on what’s happening?

Not anymore, and the short on Q7902 has returned. What am I doing wrong?

Ok now it doesn't turn on anymore (a brief little movement from the fan) and PPBUS_G3H is 11.92V Original charger pulses again.

Diode and resistor are ok. Replacing Q7901 (I swear it wasn't shorted before changing Q7902 ahah)

Ok, I found the short. It was not on PPBUS_G3H, found by disconnecting L7900 and isolating the short to the CHGR_PHASE side. Q7902 had shorted itself internally to ground, replacing that allowed the board to turn on and have fanspin. The problem now is that the whole 18.5V from the charger is...

Right, sorry! I got a steady green light with a fake charger. Replaced Q6950, got a green light with the Apple charger. Tested rails: PP18V5_DCIN= 18.38V (at F6900 and Q6950 pin 1-3) PP18V5_G3H_CHGR= 18.38V (at Q6950 pin 5-8) PPDCIN_G3H= 17.59V (at C7800) PP3V42_G3H= 3.33V (at L7810) PPBUS_G3H=...

Thank you! Will do as soon as I get to the Mac!

Hi everyone. I have an A1261 17" MacBook Pro (old, I know) that I'm trying to fix. The board is a 820-2262. I have no solid MagSafe light: it blinks regularly but very faintly, sometimes green, sometimes orange. You can hear a very light clicking from the board when the light blinks. I measured...