820-00165 not turn on orange light

[andrespi]

PP3V42_G3H_REG=3.42.
PPBUS_G3H=8.56
SMC_RESET_L=3.3V
PP3V3_S5_REG=0V
SMC_PM_G2_EN=3.3V
PPVRTC_G3H=3.3V

 

[2informaticos]

Post U7501 basic voltages; pins 23, 22, 12, 13, 29, 21.

 

[andrespi]

pin 23=8.58. pin22=3.2v. pin 12=3.4v pin13=1.99, pin 29=4.9 pin 21=3.4v

 

[2informaticos]

Then you must have 3V3_S5 at L7560.
If not, check all resistors and traces related with 3V3_S5 generation.

 

[andrespi]

ok already check resistors and traces are fine, not present 3V3_S5 in L7560

 

[2informaticos]

Diode mode to ground at L7560?

 

[andrespi]

L7560= diode mode 0.36

 

[2informaticos]

Still problems on U7501 area.
Change the chip...

 

[andrespi]

change the chip, the voltage varies from 0 to 3 constantly in l7560

 

[2informaticos]

Any pulse at L7520?
SMC_PM_G2_EN fluctuating too?

 

[andrespi]

yes, SMC_PM_G2_EN fluctuating too

 

[2informaticos]

SMC may detect an overcurrent, or you have problems with a secondary power supply.
Still the same starting in SMC bypass mode?