Operating instructions

42″&47″ LCD TV AOC L42H831&L47H831
22
5. No sound
Check the source
OK
Reset source
Check si
g
nal filter circuit
NG
Replace the filter or inductance
OK
NG
SIF si
g
nal Check TV s
y
stem setu
p
OK
Check TU701
Re
p
lace TU701
Check U606
NG
Re
p
lace U606
Check Earphone
j
ack
NG
Replace the Earphone
j
ack
OK
Check s
p
eaker
NG
Replace speaker
Check U603
Replace U603
HDMI si
g
nal
NG
Check U507
NG
Replace U507
AV/SV/COMP
ONENT/PC
signal
Check U603
Replace the failure
component
NG
NG
NG