So I have this water damaged A1502 MBP 13" Retina, it was very light water damage, as no apparent physical signs of corrosion.
PPBUS_3GH is good, all PP3v42 are good.
NO PP5V_S5.
U7501 is receiving 3.3 @ VIN but no voltage at SMC_PM_G2_EN , S5_PWR_EN or P5VS4RS3_EN.
I do get a faint green light on the charger, no fan spin.
However one random time I plugged in the magsafe to test voltage, the charger showed a solid bright green / orange light.
PP5V_S5 was showing 4.1 volts after unplugging and re inserting the magsafe, the charger went back into faint green light, and no power at PP5V_S5
I am no expert when it comes to this stuff, so bear with me in my explanations.
Where should i start checking first? Does SMC_PM_G2_EN need to be present before S5_PWR_EN?.
EDIT: I went through the power rails one more time. I am now getting a short to ground on PPVRTC_G3H and PP3V3_S5, Also it seems as if someone attempted board repair prior to me receiving it, C1910 is gone, looks like it was scratched off when trying to probe.
PPBUS_3GH is good, all PP3v42 are good.
NO PP5V_S5.
U7501 is receiving 3.3 @ VIN but no voltage at SMC_PM_G2_EN , S5_PWR_EN or P5VS4RS3_EN.
I do get a faint green light on the charger, no fan spin.
However one random time I plugged in the magsafe to test voltage, the charger showed a solid bright green / orange light.
PP5V_S5 was showing 4.1 volts after unplugging and re inserting the magsafe, the charger went back into faint green light, and no power at PP5V_S5
I am no expert when it comes to this stuff, so bear with me in my explanations.
Where should i start checking first? Does SMC_PM_G2_EN need to be present before S5_PWR_EN?.
EDIT: I went through the power rails one more time. I am now getting a short to ground on PPVRTC_G3H and PP3V3_S5, Also it seems as if someone attempted board repair prior to me receiving it, C1910 is gone, looks like it was scratched off when trying to probe.
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