A1706 820-00239-A no power

[hgoncalves]

Hi,

I have an A1706 820-00239-A with no power. Only has 5V and 0A on ampmeter (all ports).

Board has no signs of damages, and client said that it stoped powering on overnight.

PP3V3_G3H = 0V and 0.002 on diode reading

Diode readings

U3100:
PP3V3_UPC_XA_LDO = 0.453
USBC_XA_CC1 = 0.605
USBC_XA_CC2 = 0.611

UB300:
PP3V3_UPC_TA_LDO = 0.450
USBC_TA_CC1= 0.611
USBC_TA_CC2 = 0.612

U3200:
PP3V3_UPC_XB_LDO = 0.449
USBC_XB_CC1 = 0.608
USBC_XB_CC2 = 0.616

UB400:
PP3V3_UPC_TB_LDO = 0.440
USBC_TB_CC1 = 0.608
USBC_TB_CC2 = 0.613

Can you help?

TKS

 

[2informaticos]

Fix 3V3_G3H short problem.
Use voltage injection method.