820-00165-A

[tipoti]

hi,
not poweron 0,02a stay


P3V3SUS_EN: 3.3V
PP3V3_S5 :3.3V
PM_SLP_S3_L : NO voltage
PM_SLP_SUS_L :3.3V
PP3V42_G3H: 3.4v

 

[2informaticos]

Using original Magsafe 2 charger?

Check PM_BATLOW_L, PCH_DSWVRMEN, PM_DSW_PWRGD, SMC_ADAPTER_EN, PM_PWRBTN_L, PM_RSMRST_L and the 4 PCH's RTC (DC) signals.
Trigger SMC_ONOFF_L and check for drop pulse at PM_PWRBTN_L (at same time).

 

[tipoti]

PM_BATLOW_L : 3v
PCH_DSWVRMEN: 3.2v
PM_DSW_PWRGD :3,4v
SMC_ADAPTER_EN :3,4v
PM_PWRBTN_L :3,4V

PPVOUT_S0_PCH_DCPRTC: 1,5V
PPVRTC_G3H: 3,3v

PM_PWRBTN_L : yes it drops as soon as i trigger it

 

[2informaticos]

Now check if PM_SLP_S4_L pulses at same time.

BTW, read here about mentioned RTC signals.

HOW TO collection

I hope this "How to" collection will help our members. I will possibly modify this post in time, if updates available. Trigger SMC_ONOFF_L (PMU_ONOFF_L): It reffers to simulate power button function, when the keyboard is not connected. We need to do this when we work with the board...

boards.rossmanngroup.com

 

[tipoti]

RTC_RESET_L : 3.3 Volt
PCH_SRTCRST_L : 3.3 Volt
PCH_INTRUDER_L : 3.0 Volt
PCH_INTVRMEN : 3,2

PM_SLP_S4_L : I see pulse on PM_SLP_S4_L when I trigger SMC_ONOFF_L. Sometimes it goes up to 1 volt

 

[2informaticos]

Check for pulse at PM_SLP_S3_L and all big coils.
Also U1950, pins 7 & 3.
Test if machine turns on in SMC bypass mode.

 

[tipoti]

There is a pulse on pin 7 and no on pin 3
SMC bypass mode. won't open
There is a pulse on PM_SLP_S3_L

 

[2informaticos]

Try tying together pins 5 & 6 of U1950.

 

[tipoti]

nothing changed. There is no voltage

 

[2informaticos]

Still no pulse at pin 3???