820-3476 orange light not turn on

[andrespi]

hellos this problem not turn on,this measures

PP3V42_G3H=3.41
PPBUS_G3H=12.58
PP3V3_S5=3.3v
PP5V_S4=0v

 

[2informaticos]

Why do you search for S4 voltage, before checking 3V3_SUS?
Original 60/85W Magsafe 2 charger?

 

[andrespi]

porque pensaba s4 estaba antes que 3V3_SUS en secuencia encendido, si es original cargador 60w.
3V3_SUS=3.3V

 

[2informaticos]

Trigger SMC_ONOFF_L and check for drop pulse at PM_PWRBTN_L (at same time).
If detected, check for pulse at PM_SLP_S4_L too.

 

[andrespi]

Trigger SMC_ONOFF_L and there is a pulse PM_PWRBTN_L, but there is no pulse PM_SLP_S4.

 

[2informaticos]

Then the problem is PCH related.
Check its basic signals; PM_BATLOW_L, PM_DSW_PWRGD, PCH_DSWVRMEN, SMC_ADAPTER_EN, PM_RSMRST_L and the 4 DC RTC signals.

 

[andrespi]

PM_BATLOW_L=3.3v PM_DSW_PWRGD=3.4v PCH_DSWVRMEN=3.2 SMC_ADAPTER_EN=3.3v PM_RSMRST_L=3.3, RTC_RESET_L=3.3v PCH_SRTCRST_L=3.3v PCH_INTRUDER_L=3v PCH_INTVRMEN=3.1v

 

[2informaticos]

Are you really sure no pulse at PM_SLP_S4_L, nor PM_SLP_S3_L?
In such case, PCH internal failure.
You can try to heat it (adding quality flux) and pray...