Lcd Is Still Off After Pwr On - Samsung SM-G973F Service Manual

8. Level 3 Repair
8-4-13. Display

LCD is still off after PWR ON

Check the connection of
HEA12000
VDD_DDI_3P0=3.0V (C12026)
VDD_DDI_1P8=1.8V (C12027 )
VDD_DDR_1P6=1.6V(C12039)
ELVDD 4P6=4.6V (C12001)
ELVSS_-4P4 = -1.4 ~ -5.4V (C12003)
ELAVDD_7P6 = 5.8 ~ 7.9V (C12005)
Replace UB
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Yes
No
Yes
No
Check
Yes
No
Check
Yes
No
Yes
No
END
No
Reconnect the HEA12000
No
Resolder or Replace the PMIC (U12006)
No
Resolder or Replace the PMIC (U12006)