MacBook Pro A2442 820-02098 voltage fluctuate

[iCalfixit]

no water damage, no corrosion just die, board very clean.
PPBUS_AON MIN/MAX = 6 - 12v fluctuate
PPBUS_AON_MPMU MIN/MAX = 6 - 12v fluctuate
PMU_VDDHI MIN/MAX = 0,7 - 2.5v fluctuate
PP3V8_AON_MPMU MIN/MAX = 2,9 - 3,8v fluctuate
PP1V8_AON = 1,8v
PMU_RESET_L = 0v
PP1V2_S2. = 0-0.2V fluctuate

when I remove R8170 and R8171
R8170 = 1Mohm
R8171 = 300Kohm

PPBUS_AON, PPBUS_AON_MPMU, PP3V8_AON_MPMU, voltage not fluctuate

please give help master

 

[2informaticos]

First of all, welcome to the forum!

Same behavior w/ and w/o battery connected?
Be sure the charger used is 87W (at least).

2.5V is too much for PMU_VDDHI; it should stay under 1.5V all the time.
Replace R8171 with 200K and see what happens.

 

[iCalfixit]

First of all, welcome to the forum!

Same behavior w/ and w/o battery connected?
Be sure the charger used is 87W (at least).

2.5V is too much for PMU_VDDHI; it should stay under 1.5V all the time.
Replace R8171 with 200K and see what happens.

same when on battery connected and no connected
yes I used charger is 87W

I have twice replaced 200k but voltage still fluctuate and R8171 broke again, It has happened twice.
maybe U8100 is problem ?

 

[2informaticos]

Try 150K instead of 200K.
PMU_VDDHI shouldn't go over 1.5V; monitor its behavior.

BTW, write directly into bottom reply box, instead of clicking Reply button.
I don't see any reason to quote an entire post, visible few centimeters above.