Read LG 42LB9RTA (CHASSIS:LP7BB) Service Manual online
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15. In case of becomes un
usual d
isplay
from comp
onent1 mo
de(main/sub)
16. In case of becomes un
usual d
isplay
from component 2 mode(main/sub)
17. In case of becomes un
usua
l display
from RGB mode(main/sub)
Is normal video
input
of the JK102?
(Check L126, L127, L128)
Check the input source
Is normal video
input
of the JK103?
(Check L129, L130, L131)
Is normal R, G, B input
and H,V s
y
nc
of the JK500?
(Check R509, R511, R512
R513, R5
15)
Check the input source
Check the input source
Chan
ge IC(IC7
00)
Chan
ge IC(IC7
00)
Chan
ge IC(IC7
00)
YE
S
NO
YE
S
NO
YE
S
NO
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