Read LG 47SL90QD-AA (CHASSIS:LB91L) Service Manual online
Making
Revision
2009. 2 . 1
22/25
LCD TV
Symptom
SPDIF No Audio Problem
S
k
A di OK
Check the Trouble Shooting Guide
Revision
Check the SPDIF Cable
Speaker Audio OK
YES
g
Related to Audio Problem
NO
YES
Check MAIN B’D JK403
Replace MAIN B’D JK403
NO
YES
Check MAIN B’D R2305
PWM Signal ?
YES
NO
Replace MAIN B’D IC 100
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