Read LG 32LN549C / 32LN549E (CHASSIS:LJ3AC) Service Manual online
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RGB Video Trouble Shooting
Check signal format
Is it supported?
Check signal, Hsync, Vsync
R604,R601,R602,R631,R632
Replace it.
Y
N
Check JK605
Replace connector
Y
N
Y
Check RGB Cable
Y
Maybe LGE1854C(IC100) has
problems
AV Video Trouble Shooting
Check signal format
Is it supported?
Check signal
Rear – R612 (Composite),
R622 , R623 (S-Video)
Side – R676 (Composite),
Replace it.
Y
N
Check JK600 (Rear)
Check JK606 (SIDE)
Replace connector
Y
N
Y
Check AV Cable / S-Video Cable
Y
Maybe LGE1854C(IC100) has
problems
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