AOC N20W451T Service Manual page 26

20" LCD TV
6.5 No sound
Check signal filter circuit
Check Earphone jack
Check Audio decoder MSP3410G U602
Check Amplifier MAX9714ETJ U602
Reset source
Check the source
OK
NG
NG
SIF signal
OK
AV, AIR1/AIR2, PC signal
NG
OK
NG
Replace U603
Check U603
OK
NG
OK
NG
Check speaker Replace speaker
Replace the filter or inductance
Replace the Earphone jack
Check TV system setup
OK
Check TU101
Replace U602
Replace U602
26
NG
Replace TU101
AOC N20W451T