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26LD320H (CHASSIS:LD91X) - LG TV Service Manual (repair manual). Page 56

Read LG 26LD320H (CHASSIS:LD91X) Service Manual online

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
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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