Insignia NS-LCD32-09 Service Manual page 27

32〞LCD TV
4. Abnormal display
Check the source
OK
Check signal filter circuit
OK
OK
Check U406
OK
Check U401
OK
Check panel
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NG
Reset source
NG
Replace the filter or inductance
TV signal Check TV system setup
HDMI signal
NG
Replace U406
NG
Replace main board
NG
Replace panel
27
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OK
NG
Check TU201
NG
Check U501, U502,
U503, U504
Replace TU201
ReplaceU501, U502,
U503, U504