A1707 820-00281 Not starting

[Mori3000]

I have 20v on charger and no problem there

U7650 pin 4 P5VS4_EN_RCD is 0v diode mode 510, and of course PP5v_S4 is 0v

PM_SLP_S5_L R1230 0v diode mode 510

May i have some advices please.

 

[2informaticos]

Any history fault available?

Check PMIC LDOs; U7800 (7 OF 10), page 70.

 

[Mori3000]

PPBUS_PMIC 12.6v
PP5V_PMICLDO 5.1v
PP3V3_PMICLDO 3.3v
VINLDO3 12.6v
P1V8SUS_SW 1.8v

 

[2informaticos]

Do you get 3V3_S5?

 

[Mori3000]

I do have 3.4v but
R7837 PMIC_EN3V3SW is 0v

 

[2informaticos]

Did you expect other voltage at R7837, why?

Trigger SMC_ONOFF_L and check for drop pulse at PM_PWRBTN_L (at same time).
Work with the board alone on the desk.
Use SW5200, or R5226 pads, instead of power button.

 

[Mori3000]

PM_PWRBTN_L I have 3.5v and there is no drop there.

 

[2informaticos]

Did you check it at exact same time when trigger SMC_ONOFF_L?
If yes, then have a SMC issue.