LG 55LB6500-um - Page 90

Standard Repair Process
A. Video error
No video/ No audio
Established
date
Revised date
2/13
LCD TV
Error
symptom
2013. 11 .30
Normal
voltage?
Check various voltages
of Power Board
(
3.5V
,
12V
,
20V or 24V…
)
No Video/
No audio
Check and
replace
MAIN B/D
Y
☞A4
(,, )
No
audio
MAIN
B/D
Replace Power
Board and repair
t
N
End
par
t
s
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