A2159 No power 20V

[tommy97]

Hi, today i've got a2159 820-01598, it outputs 20v and 0 amps, not visible liquid damage or broken off components. The laptop is in good condition, however the fan is filled with the dust, and I'm a bit concerned about an overheated CPU, resistance on CPU 3Ohm++.

ppbus normal
PP3V3_G3S normal
P5VG3S_EN - MISSING
PP5V_G3S - MISSING
Any tips/guidances?

[tommy97]

Re: A2159 No power 20V

PPVBAT_G3H_CHGR_REG : 12.3v
PPBUS_G3H 12.30v
PP3V_G3H_RTC 3V
P5VG3S_EN 0v
P5VG3S_EN_DLY 0 v
P5VG3S_PGOOD 0 v
PP5V_G3S 0v
P5VG3S_EN_R - 0v

R7613 - 0v on both sides
R7660 - 0v on both sides
R7661 - 0v on both sides

I believe U7650 produce 5V, however EN Signal is required which is produced by PMIC?

[Chris17]

Hi Tommy, I'm about to start fault finding on my own A2159; can I ask you where to source the schematics? Sorry I cant contribute to your particular fault at this stage.

[mon2]

Schematics:

A2159 MacBook Pro (13-inch, 2019) 820-01598-06 - Badcaps