LG 26LG3000 - Troubleshooting Audio Issues; No Sound

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Only for training and service purposes
5. No Sound
Check the source
OK
Reset source
Check si
g
nal filter circuit
NG
Re
p
lace the filter or inductance
OK
NG
SIF si
g
nal Check TV s
y
stem setu
p
OK
Check TU201
Re
p
lace TU201
A
V, co m
p
onent, S-video, PC si
g
nal
NG
Chec
k
A
m
p
lifier TDA8932BTW U602
Re
p
lace U602
Check Ear
p
hone
j
ack
NG
Re
p
lace the Ear
p
hone
j
ack
OK
Check s
p
eake
r
NG
Re
p
lace s
p
eake
r
Check relative circuit
NG
No sound