LG 32LC7D Service Manual page 20

(5) In case of an unusual display in Component, RGB mode
Are the R,G,B input and H,V
Sync of the J1100 normal?
Yes
Same as Block A
(6) In case of an unusual display in HDMI mode
Is the HDMI002(IC1004)
normal?
Yes
Same as Block A
(7) In case of an unusual display in SCART1 mode
Is the Video input of the
A/V Jack(J1200) normal?
Yes
Same as Block A
(8) In case of an unusual display in SCART2 mode
Is the Video input of the
A/V Jack(J1201) normal?
Yes
Same as Block A
No
Check the input source
No
Are Input voltage, IIC Communication
and HV sync normal?
No
Check the input source
No
Check the input source
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No
Replace the IC.