19" LCD Color Monitor
9.2.2Power Board
1. No Power
Check ZD902 = 16V
NG
Check AC line volt 110V or 240V
NG
OK
Check the voltage of C905(+)
NG
OK
Check start voltage for the pin3 of IC901
NG
OK
Check the auxiliary voltage
NG
OK
Check IC901 pin8 PWM wave
NG
OK
Check IC903,IC904,Q901,D906,D907
AOC 919Swa
Check AC input
Check bridge rectified circuit and F901 circuit
Check R904,R905,R906 and Change IC901
1)Check IC901,T901
2)Check OVP circuit
Check IC901
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