Read LG 32LC3R (CHASSIS:LP61A) Service Manual online
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3. No Sound
(1) Symptom
1) Front LED is Green
2) The Set display a screen, but a sound doesnt output
2) The Set display a screen, but a sound doesnt output
(2) Check follow
1) Speaker part
Are Speaker Cables
Good?
Good?
Are Speaker Cables
connect normally?
connect normally?
No
Yes
No
Yes
Are Speaker units
good?
good?
No
Exchange the cable
Insert the cable
exactly
exactly
Exchange the
Speaker unit
Speaker unit
Is sound at HDMI
Good?
Is EDID download
good?
good?
No
Yes
Is IC401 good?
(AD9381)
(AD9381)
No
No
Download EDID
data once more.
data once more.
Exchange IC401
Is sound at
Scart1/2 (or
Component2)RGB,
or Side AV Good?
Component2)RGB,
or Side AV Good?
Are good some
elements (C, R, L,
or Diode) at Sound
path?
elements (C, R, L,
or Diode) at Sound
path?
No
No
Yes
Yes
Is IC800 good?
(Switching IC)
(Switching IC)
No
If it dead or short,
exchange this
elements
exchange this
elements
Is sound at RF, AV,
or Component1
Good?
Good?
Are good some
elements (C, R, L,
or Diode) at Sound
path?
elements (C, R, L,
or Diode) at Sound
path?
No
Yes
No
If it dead or short,
exchange this
elements
exchange this
elements
Exchange IC800
Is IC601 good?
(VCT-P)
(VCT-P)
No
Exchange IC601
Yes Is IC801 good?
(Amplifier)
No
Exchange IC801
2) Main board part
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