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Macbook Air 13 820-3209-A PP1V5_S3 is 1.350V

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Ciki

New member
I have PP5v_s0 and when charger is connected fan make a kind of little move but thats it only line which is not good is PP1V5_s3 it only 1.350V a try to replace U7300,q7330,q7335,Q7801 and U7801 but still 1.350V ,on U7300 pin 2 is 1.350V PPVIN_S0_DDRREG_LDO ????
 
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dukefawks

Administrator
1.35V is normal on this line as it feeds DDRL memory. If fan is not spinning the ALL_SYS is probably low and you are missing a main power rail, find it.
 
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