AOC L27W451 Service Manual page 29

27'' LCD TV Color Monitor AOC L27W451
5.3 No display (LED indicator green)
NG
Check the source
Reset source
OK
NG
Check LVDS cable Reset LVDS cable
OK
NG
Return to "5.1"
Check 24V power supply
OK
Check main board power supply
OK
NG
Check U21
Replace U21
OK
2
Check I C communication
OK
NG
Replace panel
Check panel
29