[help] a1707 820-00281: 20v 0,015a. all voltages presents!!

[phantom]

hello! please help me, i'm going crazy!

I have an a1707 dead. All ports 20v.
I had 3v and 5v floating

No voltage and low diode value (like 0,035 instead of 0,400) n pp5v_pmic_ldo and 3,3v_pmic_ldo

i've changed u7800 pmic from a donor board. now i have 3v and 5v stable, but still 20v 0,015a

here is what i have measured
PPBUS_G3H: 12.6V
PP3V3_G3H: 3.3V
PP5V_S5 & PP3V3_S5: Present
SMC_RESET_L: 3.3V
PP3V3_UPC: 3.3V
SMC_BC_ACOK: 3,4
SMC_PM_G2_EN: 3,4
PM_RSMRST_L: 0v
PM_PWRBTN_L: 3,3v
pm_batlow_l: 3v
pm_dsw_pwrgd 3,4v
pm_slp_sus_l 3,3v
rtc_reset_l 3v
pch_srtcrst_l 3v
pch_intruder_l 3v
3v0_g3h 3v
pp1v25_pmicref 1,25v
3v0_g3h 3v
pp5v_pmicldo 5v
pp3v3_pmicldo 3,3v
3v3_sus 3v

i'm going crazy to understand why PM_RSMRST_L: 0v

r7810, presents, 4k. both sides are ok in diode mode. one side is 3,3v, the other side is 0v.


how is it possible

 

[2informaticos]

SMC, PCH and U7800, all connected there.
The line is controlled by U7800, but can be kept down by SMC, or PCH if any has internal failure.