a2337 PP5V_S2 missing no short.
I have a a2337 m1 MacBook Air that has no power.
PP5V_BSTLQ_SPMU is shorted so I fix it by change cap, coil, u7700. now normal voltage.
when I didn't connect battery , plugged in power, there is only 5V 0.25a.
so I checked every power rails , I finally founded PP5v_s2 is 0v, but there is no short.
PPBUS_5VS2_VIN = 12V normal
P5VS2_EN from U8100 = 0.6V maybe normal
P5VS2_FB,PGOOD,VC,SS,BIAS,INTVCC = very low voltage maybe abnormal.
what should I do ?? do I need to change uc300?
PP5V_BSTLQ_SPMU is shorted so I fix it by change cap, coil, u7700. now normal voltage.
when I didn't connect battery , plugged in power, there is only 5V 0.25a.
so I checked every power rails , I finally founded PP5v_s2 is 0v, but there is no short.
PPBUS_5VS2_VIN = 12V normal
P5VS2_EN from U8100 = 0.6V maybe normal
P5VS2_FB,PGOOD,VC,SS,BIAS,INTVCC = very low voltage maybe abnormal.
what should I do ?? do I need to change uc300?
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