18.5" LCD Color Monitor AOC F19L
43
2. W/LED No Backlight
Check C802 (+) =12V
NG OK
Change Q802
Check ON/OFF signal
Check main board
NG
OK
Check IC801 pin6=12V
NG
OK
Change Q807 or Q809
Check the pin1 of IC801 have saw tooth wave
NG
Change IC801
Check T801 have the output of square wave at short time
Check C839/ R856/C838
Check the resonant wave of pin2 & pin5 for T801
Check the output of T801
Check C819/R817/ R821/R801/D801
Check C823/R828/ R822/R814/D802
Check connecter & lamp
Change T801
OK
NG
NG
OK
OK
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