22” LCD Color Monitor Topview A2281Wd+
39
W / LED, No Backlight
Check C802(+) =16V
NG
OK
Check adapter or main board
Check ON/OFF signal
Check main board
NG
OK
Check IC801 PIN2=5V
NG
OK
Change ON/OFF circuit
Check IC801 PIN13 have triangle wave
NG
OK
Change IC801
Check IC801 PIN1/PIN15 PWM wave
NG
OK
Check IC801
Check Q805, Q806 Drain wave
NG
Check the output of PT801
Check D801/D802/D803/D804
Check connecter & lamp, feedback and protect circuit
OK
NG
Change PT801
OK
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