In Case Of No Sound - LG 47LF65 Service Manual

5. In case of no sound

(1) Symptom
1) LED is green.
2) Screen display but sound is not output
(2) Check follow
All input (mode)
is no sound?
Yes
Only HDMI is
No sound?
Yes
Only RF is
no sound?
Yes
Only
AV/component/PC
input is no sound?
Yes
Only specific input
(except HDMI,
DTV,RF) is no
sound?
No
No
Download
the EDID data.
No
Check
the Tuner IN/OUT
No
Is the output of
CXA2069 normal?
Yes
Check the signal after CXA2069
refer to circuit diagram
No
Check the signal before
CXA2069 refer to circuit diagram
Is the speaker
On it men?
Is the speaker
Cable normal?
No
Replace CXA2069
IC1300 operates
Normal?
IC1301 operates
Normal?
Replace VSC BD
- 30 -
No
Set on speaker in
menu.
Yes
No
Check the Speaker
Cable
Yes
No
Replace IC1300
(MSP4450)
Yes
No
Replace IC1301
(STA335BW)
Yes