Hi all, I'm new here (thanks for having me). I've repaired some macbooks in the past, but never had to dig really deep, until now...
Got my hands on a Macbook Air that does not boot. Charger light goes from green to orange so there was some life in this thing.
Did some digging to find that I do not have a PP3V3_S5, also not pulsing in anyway. SMC_PM_G2_EN is also missing, no pulse.
Some voltages:
PPBUS_G3H 8.56V
PP3V42_G3H 3.42V
PPDCIN_G3H 16.5V
PP5V_S5 5V
PP3V3S5_EN_R 3.41V
PP3V3_S5_AVREF_SMC 3.24V
SMC_RESET_L 3.38V
SMC_ONOFF_L 3.42V
I don't have a donor board to check whether U7501 is causing the issues. But maybe someone has any tips on what I could check?
Did not notice any shorts so far.
Got my hands on a Macbook Air that does not boot. Charger light goes from green to orange so there was some life in this thing.
Did some digging to find that I do not have a PP3V3_S5, also not pulsing in anyway. SMC_PM_G2_EN is also missing, no pulse.
Some voltages:
PPBUS_G3H 8.56V
PP3V42_G3H 3.42V
PPDCIN_G3H 16.5V
PP5V_S5 5V
PP3V3S5_EN_R 3.41V
PP3V3_S5_AVREF_SMC 3.24V
SMC_RESET_L 3.38V
SMC_ONOFF_L 3.42V
I don't have a donor board to check whether U7501 is causing the issues. But maybe someone has any tips on what I could check?
Did not notice any shorts so far.
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