LG 26LD320H (CHASSIS:LD91X) Service Manual ▷ View online
Check Signal format
Is it supported?
Check the RGB Cable
YES
MAIN B’D P400 Check
Replace MAIN B’D P400
YES
NO
NO
YES
Check MAIN B’D C212 (RED)
C207 (GREEN)
C213 (BLUE)
Video Signal ?
Replace
MAIN B’D C212 or C207 or C213
NO
Replace MAIN B’D IC 100
YES
MAIN B’D P400
Pin #3 (BLUE)
Pin #2 (GREEN)
Pin #1 (RED)
Video signal ?
Making
전자 - 6-2
Revision
LCD TV
Symptom
RGB No Color Problem
2010. 07 .27
22~42LD320H
Check Signal format
Is it supported?
Check the HDMI Cable
YES
YES
Replace MAIN B’D IC 100
Check the ADJUST MENU
EDID OK ?
YES
Download EDID
(Refer to Adjustment Spec)
NO
NO
Replace
MAIN B’D IC107 (HDCP KEY)
Making
전자 - 6-2
Revision
LCD TV
Symptom
HDMI 1~2 All No Video Problem
HDMI1 – ALL MODELS
HDMI2 – Except for 19/22LH250**
HDMI2 – Except for 19/22LH250**
2010. 07 .27
22~42LD320H
Check Signal format
Is it supported?
Check the HDMI Cable
YES
YES
Replace MAIN B’D IC 100
MAIN B’D JACK Check
JK600 -> HDMI1
JK601 -> HDMI2
JK601 -> HDMI2
YES
※ This case is that HDMI Video doesn’t display at the some HDMI input, not all.
Making
전자 - 6-2
Revision
LCD TV
Symptom
HDMI1 or 2 No Video Problem
HDMI1 – ALL MODELS
HDMI2 – Except for 19/22LH250**
HDMI2 – Except for 19/22LH250**
2010. 07 .27
22~42LD320H
Check The Speaker
Check Speaker Cable
YES
Check P700 Cable
YES
NO
Replace MAIN B’D IC 701
YES
MAIN B’D
L705 Pin #1
L704 Pin #2
L704 Pin #2
PWM Signal ?
Replace Speaker
NO
Replace Speaker Cable
NO
CHECK MAIN B’D
JK700 or JK701
YES
Replace MAIN B’D
JK700 or JK701
NO
※ If headphone is connected, Speaker sound doesn’t work.
Replace MAIN B’D IC803
NO
YES
MAIN B’D
L700 = 1.8V
MAIN B’D
Check R720, R721, R722
Signal
YES
Replace MAIN B’D IC100
NO
Replace MAIN B’D IC701
NO
Making
전자 - 6-2
Revision
LCD TV
Symptom
All Source no Audio Problem
2010. 07 .27
22~42LD320H
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