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23" LCD Color Monitor
W / LED, No Backlight
Check ON/OFF signal
s
Check connecter & lamp, feedback and protect circuit
Check Inverter input =16V
NG
OK
NG
OK
Check IC801 PIN 11=5V
NG
OK
Check IC801 PIN8/PIN9 PWM wave
NG
OK
Check Q805, Q806 Drain wave
NG
OK
Check the output of PT801
NG
OK
Check adapter and ZD802, ZD803
Check Interface board or main board
Change ON/OFF circuit
Check IC801
Change Q805, Q808
Change PT801
55
BenQ G2320HDB
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