LG 42LC5DC (CHASSIS:LA65A) Service Manual ▷ View online
- 25 -
Component Video Trouble Shooting
Check signal format
Is it supported?
Check signal
R541, R542, R543 /
R558, R561, R555
Replace it.
Y
N
Check J500
Replace connector
Y
N
Y
Maybe FI-8668(IC506) has
problems
Y
Check Component Cable
- 26 -
RGB Video Trouble Shooting
Check signal format
Is it supported?
Check signal, Hsync, Vsync
R545, R546, R548, R1549, R1550
Replace it.
Check signal
R557, R560, R562
Y
N
Check P1302
Replace connector
Y
N
Y
Replace it
N
Maybe FI-8668(IC506) has
problems
Y
Check RGB Cable
Y
- 27 -
AV Video Trouble Shooting
Check signal format
Is it supported?
Check signal
Rear - RR537 (Composite),
RR535 / RR536 (S-Video)
Side ñ R503 (Composite),
R501 / R502 (S-Video)
Replace it.
Y
N
Check J501 (Rear)
Check P500 & Cable (Side)
Replace connector
Y
N
Y
Maybe FI-8668(IC506) has problems
Check AV Cable / S-Video Cable
Y
- 28 -
HDMI Video Trouble Shooting
Check signal format
Is it supported?
Y
Check J300
Replace connector
Y
N
Y
Check HDMI Cable
Check EDID NVRAM (IC301)
Power & I2C Signal (#5, #6)
Replace it or redownload
Y
N
Check IC302 #49 Pin Voltage
Level
3.3V
Replace it
Y
N
Check L302 Voltage Level 3.3V
Replace it
Y
N
Check IC600 Clock Signal
#26, #28
Replace it
Y
N
Maybe FI-8668(IC506) has problems
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