820-00165 no power no ALL_SYS_PWRGD and more

[Tillie14]

This is the outcome of my tests
busy for day's ( pHfff)

PM_DSW_PWRGD, PCH_DSWVRMEN, PM_BATLOW_L, SMC_ADAPTER_EN and PCH's RTC signalsv = Ok.
ALL_SYS_PWRGD=0V
PLT_RESET_L=0V
PM_PCH_SYS_PWROK=0V
CPU_VCCST_PWRGD = 1.05V
CPU_VR_READY = 1.08V
PP5V_S4RS3=5V
SMC_ONOFF_L 3,43v
PM_PWRBTN_L 3,42v
PM_SLP_S4_L 3,42v
PM_SLP_S3_L 3,42v
PPVCC_S0_CPU= 1.85v
PP1V2_S3= Ok
PP3V3_S5_REG_R= Ok
P3V3_S5_VFB2_R= Ok
PP1V05_S0 = Ok
PP1V8_S3 = Ok
PP1V5_S0 = OK
PP1V5_S0 = OK
PP3V3_S4 = OK
PP3V3_S3 = Ok
PP5V_S0 = Ok

I have look arround in the forum, but find no solution.
What to do nex ( help!)

Or is this a waste of time??

 

[2informaticos]

Lift U1950 and check for corrosion.
Also remove Q8150 and check again ALL_SYS_PWRGD.

 

[Tillie14]

Q8150

First i replace U1950, and i get the ALL_SYS_PWRGD. 3.3V, but on

PLT_RESET_L=0V
PM_PCH_SYS_PWROK=starts with 0,300+v and drops to 0,145V
Then i replace Q8150 , stil the same two above

 

[Tillie14]

I Have changed U1950 with another and now get both, And a mac-folder.
Thanks for now.
Tomorrow some test and hope everything works ok

 

[Tillie14]

Tests done seems to work ok,
Tanks aigain