In Case Of No Sound - LG 32LC7D Service Manual

6. In case of no sound

(1) Symptom
1) LED is Green.
2) Screen display appears but there is no sound.
(2) Procedure check
Is there no sound for
All input(modes)?
YES
Is there no sound
only for HDMI?
YES
Is there no sound
only for RF?
YES
Is there no sound only
for AV/component/PC
input?
Yes
Is ther no sound only
for specific input?
(except HDMI,DTV,RF)
No
No
Download
the EDID data
No
Check
the Tuner IN/OUT
No
Is the output of
CXA2069 normal?
YES
Check the signal after
CAX2069 refer to circuit diagram
No
Check the signal before
CAX2069 refer to circuit diagram
Is the speaker on?
Is the speaker Cable
normal?
No
Replace the CXA2069
Is theIC1300
operating normally?
Is the IC1301
operates normally?
Replace the VSC B/D
- 21 -
No
Set on speaker on in
YES
No
Check the Speaker
Yes
No
Replace the IC1300
YES
No
Replace the IC1300
YES
menu.
Cable.
(MSP4450)
(STA335BW)