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820-00923 5V 0.04A

A

ajdoc

Member
A lot of liquid damage on U3100, U3200, U7100, U7420

Data needed.

U3100, U3200 was not looking great.
Replaced both but still the same 5v 0.04A from charger.

LDOs on all four CD3215 in diode mode and voltage values are correct.

PPBUS_G3H 0V and no short.
I lifted one side of F7000 and on F7000/1 0V

An ideas?
 
2informaticos

2informaticos

Administrator
Staff member
Keep F7000 out until get correct C7050 voltage.
Post U7000's basic voltages: P_IN, AUX_DET, SMC_RST_IN, VDDA/P, EN_VR1, SMC_RST*, AUX_OK, A/BMON.

3V3_G3H MUST appear before PPBUS_G3H!
 
A

ajdoc

Member
P_IN 5.15V
AUX_DET 1.28V
SMC_RST_IN 0V
VDDA 5.08V
VDDP 5.08V
EN_VR1 5.07V
SMC_RST* 3.4V
AUX_OK 3.4V
AMON 0V
BMON 0V

3V3_G3H 3.4V
 
A

ajdoc

Member
C7050 have 0.02V

Some of those rails above are not stable and USB C meter switch off and it is in loop every 3 seconds, reach max 0.03A
 
A

ajdoc

Member
Yes, tried with another charger, charger cable, USB C ports and the same behavior (flipped charger cable as well).
 
2informaticos

2informaticos

Administrator
Staff member
Check again U7000 voltages with both charger and battery (holding charge) connected.
Let see if all voltages are stable now.
 
A

ajdoc

Member
OK, when battery was connected all came back to normal.
Charger charge the battery without any issues and data has been recovered.
Dont know why it was stuck at 5V but work now.

Thank you so much for help.
 
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