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42LH301C (CHASSIS:LD91A) - LG TV Service Manual (repair manual). Page 32

Read LG 42LH301C (CHASSIS:LD91A) Service Manual online

Normal
 voltage?
Check various
voltages of Power
Board ( 5V,12V,20V
or 24V…)
No Video/
No audio
Check and
replace
MAIN B/D
Y
Replace Power
Board and repair
parts
N
End
Standard Repair Process
A. Video error
 No video/ No audio 
Established
date 
Revised date 
2008. 3 .05
2/13
LCD  TV
Error
symptom
2
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