820-00840 dead

[Soji]

Draws 5.17v no current
PPBUS_G3H not present
PP3V3_G3H not present
PP3V3_UPC_XB_LDO
Diode mode readings
PPBUS_G3H=0.353
PP3V3_G3H=0.373
PP3V3_UPC_XB_LDO=0.340

 

[2informaticos]

Any history available?
Do you get 5V at R7020?
If yes, post U7000 basic voltages; P_IN, AUX_DET, VDDA/P, SMC_RST_IN, EN_VR1, SMC_RST*, AUX_OK, A/BMON.

 

[Soji]

Yes at PPDCIN_G3H
SMC_RST_IN=0.034
AUX_OK=3.341v
A/BMON=0v
VDDA/P=4.492v
AUX_DET=0.505v

 

[2informaticos]

"EN_VR1"
???

 

[Soji]

PM_EN_P3V3_G3H=0.430

 

[2informaticos]

Is that voltage reading?
Please, post accurate information.
We don't want "V" posted for diode mode readings, but is mandatory for voltage.

 

[Soji]

Diode mode reading is
PM_EN_P3V3_G3H=0.611

PM_EN_P3V3_G3H voltage is 0.030volts.

 

[2informaticos]

"AUX_DET=0.505v"
Are you sure about this?
May have bad U7000.

 

[Soji]

I checked it now TBA_AUX_DET=0 volt

 

[2informaticos]

"AUX_OK=3.341v"
Then this is not possible!

Check R7015/16 and traces.
If both good, change U7000.