Read LG 47GA7900-UA (CHASSIS:LA37G) Service Manual online
Contents of LCD TV Standard Repair Process Detail Technical Manual
No.
Error symptom
Content
Page
Remarks
16
B. Power error_ No power
Check front display LED
A17
17
Check power input Voltage & ST-BY 3.5V
A18
18
Checking method when power is ON
A19
19
B. Power error_Off when on, off while
viewing
viewing
POWER OFF MODE checking method
A22
20
C. Audio error_ No audio/Normal video
Checking method in menu when there is no
audio
audio
A24
22
Voltage and speaker checking method when
there is no audio
there is no audio
A25
22
D. Function error
Remote controller operation checking method
A27
23
Motion Remote operation checking method
A28
24
Wifi operation checking method
A29
25
E. Etc
Tool option changing method
A30
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