Hi,
I got for repair MacBook Pro 13" 820- 00875-A after liquid damage.
I check all rails and PP3V3_S5 is shorted
PPBUS_G3H 13.10V
SN650839 have some voltages coming out:
PP5V_LDo5V
PP3v3_LDO3V
PPBUS_PMIC
PP1V25_VREF
all those are present
voltage on C7960 PPBUS_G3H_CPU 13.10V
SMC have communication with charger as its changing from 5V to 20V after plug it in.
I do some checks but not really able to find what causing short, after insert 3V into this rail nothing really gets hot on board only CPU a bit. Mainboard takes 4,5A on this rail at the moment.
I have removed U7650 and U8205 and to check if this will cause short but it is not.
Any more ideas ?
Thanks
I got for repair MacBook Pro 13" 820- 00875-A after liquid damage.
I check all rails and PP3V3_S5 is shorted
PPBUS_G3H 13.10V
SN650839 have some voltages coming out:
PP5V_LDo5V
PP3v3_LDO3V
PPBUS_PMIC
PP1V25_VREF
all those are present
voltage on C7960 PPBUS_G3H_CPU 13.10V
SMC have communication with charger as its changing from 5V to 20V after plug it in.
I do some checks but not really able to find what causing short, after insert 3V into this rail nothing really gets hot on board only CPU a bit. Mainboard takes 4,5A on this rail at the moment.
I have removed U7650 and U8205 and to check if this will cause short but it is not.
Any more ideas ?
Thanks