LG 32LC7D Service Manual page 13

2. In case of occurring strange screen into specific mode
2-1. In case the OSD does not displayed
(1) Symptom
1) LED is white.
2) Some discharge on Panel becomes accomplished continuously.
(2) Check following
Is the LVDS cable
normal ?
Yes
Is the VSC Board
normal?
Yes
Is the Ctrl Board of
Module normal?
No
Is the LVDS cable
connected well?
No
Cable inserts well.
No
Does the Thine IC
(IC900) Operates ?
No
Replace Thine
(IC900).
No
Replace Ctrl B/D.
Yes
Replace the cable.
Yes
Does the Scaler
(IC401) Operates ?
No
Replace Scaler
(IC401).
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Yes
Replace VSC
Digital B/D.