LG 43LW540S - Advanced TV Configuration; Setting the TVs ID; RS-232 C Configuration Details

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Only for training and service purposes
2. Digital/Analog TV Video
Check the RF cable and RF signal
Check the Tuner 3.3V
; L3704: +3.3V
Check the Tuner Signal
: TU3703 3,4,5,6,7 pin
No
No
No
Yes
Yes
Yes
Check the LVDS output signal of
SoC(IC101)
Exchange the L3704
Exchange the Tuner
Exchange the SoC(IC101)
Or Main board