A1990 820-010-41-A no power

On each of those 3 ports (rebooting ones), the voltages oscilates between 0.3V and 0.9V, and one time it reached (very, very quickly 2V and then continuated to oscilate from 0.3V to 0.9V
 
U3100:
PP1V1_UPC_XA_LDO_BMC = 0.535V
PP1V8_UPC_XA_LDOD = 0.496V
PP1V8_UPC_XA_LDOA = 0.538V
PP3V3_UPC_XA_LDO = 0.520V

U3200:
PP1V1_UPC_XB_LDO_BMC = 0.540V
PP1V8_UPC_XB_LDOD = 0.504V
PP1V8_UPC_XB_LDOA = 0.544V
PP3V3_UPC_XB_LDO = 0.521V

UB300:
PP1V1_UPC_TA_LDO_BMC = 0.529V
PP1V8_UPC_TA_LDOD = 0.0671V

I think that the short is here. Shall I remove UB300?
 
Sorry for the delay, but I had a flood in the store and this has been very difficult. I only replaced it today, and It turned out, it was the UB300 damaged.
It's working again.
Thanks!
 
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