LG LG-E960 - Main LCD Trouble

4. TROUBLE SHOOTING
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4.12 Main LCD trouble
Main LCD control signals are generated by APQ8064.
Those signal’s path are : APQ8064 -> LCD Module
Disconnect or Re-connect
LCD connector
No
START
LCD Doplay OK?
LCD_VIO_1V8(TP1)
LCD_VCI/VCC_3V(TP2)
DDVDH_+5.5V(TP3)
DDVDL_-5.5V(TP4)
Change The main board
Change the LCD Module
END
No
Press power Key trun the power ON
Yes
Is the circuit powered?
Follow the power ON
trouble shooting
No
Yes
Yes