820-00165 - no liquid, does not start

ipcrepair2

New member
did checked for shorts on all the bottom power lines and found none,

PM_SLP_SUS_L - 3.3v

PM_RSMRST_L - 3.3V

PM_PWRBTN_L - 3.4V

PM_BATLOW_L - 3.33V

PM_DSW_PWRGD - 3.4V

PCH_DSWVRMEN - 3.23V





PPBUS_G3H - 8 59V

PPVIN_G3H_P3V42G3H - 16.42v

PP18V5_DCIN_ISOL_R - 16.64v

PPDCIN_G3H - 16.70V

PP3V42_G3H - 3.42v

PPBUS_S5_HS_COMPUTING ISNS - 8 6V

PPBUS_S5_HS_OTHER ISNS - 8 6V

PP5V_S5 - 5V


PP5V_S0 - 0V

PP3V3_S5 - 3.3V




PP3V3_S3 - 0V

PP3V3_S0 - 0V

PP1V8_S3 - 0V

PP1V2_S3 - 0V



SMC_BC_ACOK - 3.3V
 

2informaticos

Administrator
Staff member
First of all, welcome to the forum.

Trigger SMC_ONOFF_L and check for drop pulse at PM_PWRBTN_L at same time.
If present, then chek for pulse at all PM_SLP_Sx_L signals.
 

ipcrepair2

New member
i been with the forum by the way for years, but the password did not work, and instead of waiting for email response i just created a second account ,

i read on this forum of the issue as well,
 

2informaticos

Administrator
Staff member
Are you sure no pulse at all on any PM_SLP_Sx_L signals?
An o-scope can get peak value of any fast pulse.
Try triggering SMC_ONOFF_L several times.
If no pulses for sure, then looks like PCH issue...
 

2informaticos

Administrator
Staff member
PCH should release PM_SLP_Sx_L signals, when PM_PWRBTN_L drops.
Of course, PCH requires other signals; like the above mentioned.
But you didn't check RTC signals yet.
 
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