Rlab
Member
Hi guys,
I got this mac with a little water damage in the QB631 area and RB641 & RB631 were replaced.
I have 20v in DCIN only with the battery connected but it does not turn on. without the battery DCIN has 5V and all LDOs are present.
checking without battery i have:
PPBUS_G3H 12.28 V
PP5V_G3S 0.033 V
P5VG3S_EN 0.0 V
PP3V3_G3H_RTC 3.3 V
PP3V3_G3H 3.3 V
PP3V3_S4SW_SNS 0.0
PP3V3_G3S 0.0
P3V3G3S_EN 0.0
No shorts..
bad U7800?
any ideas?
I got this mac with a little water damage in the QB631 area and RB641 & RB631 were replaced.
I have 20v in DCIN only with the battery connected but it does not turn on. without the battery DCIN has 5V and all LDOs are present.
checking without battery i have:
PPBUS_G3H 12.28 V
PP5V_G3S 0.033 V
P5VG3S_EN 0.0 V
PP3V3_G3H_RTC 3.3 V
PP3V3_G3H 3.3 V
PP3V3_S4SW_SNS 0.0
PP3V3_G3S 0.0
P3V3G3S_EN 0.0
No shorts..
bad U7800?
any ideas?