Hitachi 19LD4550U Service Manual page 67

19"LCD TV
4. Abnormal display
AV, S-video signal
component PC signal
OK
Repair each relative circuit
Abnormal display
Check the source
OK
Check signal filter circuit
Check input signal
OK
Check LVDS cable
OK
Check panel
NG
Reset source
NG
Replace the filter or inductance
RF signal
NG
Replace LVDS cable
NG
Replace panel
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Hitachi 19LD4550U
OK
Check TV system setup
OK
Check TU201
OK
Replace TU201