Check the Connection of uUSB and battery
Is the uUSB Cable voltage 4.9V (or 5.0V)
Is it charging properly After turning on?
Change the PMIC (U4100 )
LGE Internal Use Only
START
Connection OK?
Yes
Yes
No
Connection OK?
No
Change the Main PCB
No
Change I/O connector
No
Change TA (or uUSB Cable)
Yes
Yes
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3. TROUBLE SHOOTING
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