Read LG 42LF65 (CHASSIS:LD75A) Service Manual online
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2. Protect mode
(1) Symptom
1) After once shining, it does not discharge minutely from module.
2) The relay falls.(The sound is audible “Click”.)
3) It is converted with the color where the front LED is red from green.
2) The relay falls.(The sound is audible “Click”.)
3) It is converted with the color where the front LED is red from green.
(2) Check follow
Is normal the Power
Board?
Replace Power Board.
Is output the normality Low/High
voltage except Stand-by 5V?
voltage except Stand-by 5V?
Yes
No
No
Is normal the each
connector?
Replace connector.
After connecting well each connector,
the normality it operates?
the normality it operates?
Yes
No
No
Is normal the VSC
Board?
After remove P900, P901
normal operation:
Replace VSC Board
Is normal the output voltage after
remove P900, P901 of VSC Board?
remove P900, P901 of VSC Board?
No
Yes
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