LG 22LU7000 Service Manual page 21

4. In case of occur strange screen into specific mode
1) In case of does't display the OSD
(1) Symptom
1) LED is blue.
2) The minute discharge continuously becomes accomplished from module
(2) Check follow
Is normal the LVDS
Cable ?
Yes
Is normal the main
Board?
Yes
Is normal the T-Con
Board of Module?
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No
Is the LVDS cable
connected well?
Cable inserts well.
No
Operates the
U112(FLI10610H)?
Replace
U112(FLI10610H)
No
Replace T-Con Board
or LCD Module.
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Yes
No
Yes
No
Replace Power Board.
Replace Main Board.
LGE Internal Use Only