Read LG 42LN54XX / 42LN540S / 42LN540V / 42LN541V / 42LN542V (CHASSIS:LD31B / LD36B) Service Manual online
Contents of LCD TV Standard Repair Process Detail Technical Manual
No.
Error symptom
Content
Page
Remarks
21
B. Power error_No power
Check front display LED
A11
22
Check power input Voltage & ST-BY 3.5V
A12
23
Checking method when power is ON
A13
24
POWER BOARD voltage measuring method
A4
25
26
B. Power error_Off when on, off while
viewing
viewing
POWER OFF MODE checking method
A14
28
C. Audio error_No audio/Normal video
Checking method in menu when there is no
audio
audio
A15
29
Voltage and speaker checking method when
there is no audio
there is no audio
A16
30
C. Audio error_Wrecked
audio/discontinuation
audio/discontinuation
Voltage and speaker checking method in
case of audio error
case of audio error
A16
31
D. Function error_ No response in
remote controller, key error
remote controller, key error
Remote controller operation checking method
A17
Continued from previous page
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