No Sound - LG 42LC2D Service Manual

4. No sound

(1) Symptom
LED is green
Ø
Screen display but no audio
Ø
(2) Check follow
Check Speaker
cable?
Yes
Audio normal on
RGB/DVI?
Yes
Audio normal on
RF/AV/Component?
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
IC1004 MSP4440K
good?
No
Replace IC1004
Replace
VSC Analog B/D
- 20 -
Yes
IC1002 NSP-2100A
good?
No
Replace IC1002
IC1003 TAS5122
good?
No
Replace IC1003
No