Read LG 42LB9RTA (CHASSIS:LP7BB) Service Manual online
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8. In t
h
e case of becomes unusual di
spl
ay
from side S-Vi
deo mode(main)
Is normal video input
of the A/V jack?
(Check R339, R341, L310)
Check the input source
Same as Block
A
YE
S
NO
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