AOC 936Swa Service Manual page 46

18.5" LCD Color Monitor
2.) No Backlight
Check C811(+)=14.5V
Check ON/OFF signal
OK
Check U801 PIN9=14.5V
OK
OK
Check T801 have the output of square wave at short time
OK
Check resonant wave of pin7 & pin8 for T801
OK
Check the output of T801
OK
Check connecter & lamp, feedback and protect circuit
NG
OK
NG
NG
Check U801 PIN8 have triangle wave
NG
NG
NG
NG
Check adapter and Q803
Check Interface board or main board
Change on/off circuit
Change U801
Check C812,C813
Check R807/R805/C802/R803/R801/RJ801
R808/R806/C804/R804/R802/RJ802
Change T801
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AOC 936Swa