No Sound - LG MU-42PM11 Service Manual

6. No sound

(1) Symptom
LED is green
¯
Screen display but no audio
¯
(2) Check follow
Check Speaker
cable?
Yes
Audio normal on
RGB/DVI?
Yes
Audio normal on
RF/AV/Component?
TROUBLE SHOOTING GUIDE
No
Is the SPK cable
connected well?
No
Reset cable.
No
Is the Flat cable
connected well?
No
Reset cable.
No
Yes
Replace SPK cable
Yes
IC800 good?
No
Replace IC800
Replace
VSC Analog B/D
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Yes
IC801 good?
No
Replace IC801
IC802 good?
No
Replace IC802
Yes