LG 42PX3RV Service Manual page 21

5. In case of occurring strange screen into specific mode
5-1. In case the OSD does not displayed
(1) Symptom
LED is green
¯
The minute discharge continuously becomes
¯
accomplished from module
(2) Check following
Is the LVDS cable
normal?
Yes
Is the VSC Board
normal?
Yes
Is the Ctrl Board of
Module normal?
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No
Is the LVDS cable
connected well?
No
Cable inserts well.
No
Does the FIL8532
IC(IC800) Operates ?
No
Replace FIL8532
IC(IC800).
No
Replace Ctrl B/D.
Yes
Replace the cable.
Yes
Replace VSC B/D
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