Specifications

20” LCD TV Color Monitor AOC L20S421
22
4. Abnormal Display
Check the source
OK
Reset source
Check signal filter circuit
Replace the filter or inductance
Repair each relative circuit
Check TU100
Replace TU100
AV, S-video signal
component PC signal
Check LVDS cable
Replace LVDS cable
Replace panel
Abnormal display
NG
NG
OK
NG
OK
RF signal
NG
OK
OK
OK
NG
Check panel
NG
OK
OK
Check TV system setup
Check input signal