AOC 2212ph Service Manual page 37

22" LCD Color Monitor AOC 2212ph
2.) W / LED, No Backlight
Check CN901 pin2 = 12V
OK
NG
Check adapter or MB
Check ON/OFF signal
NG
Check Interface board
OK
Check the output of IC801 pin18 is triangles wave
NG
Change IC801
OK
Check IC801 PIN12, 11, 19, 20 have the output of square wave at short time
NG
Check C828, R827,R813,C817 and IC801
OK
Check Q801,Q805,Q811,Q812 (D) output wave
NG
Check Q801,Q805,Q811,Q812
OK
Check the input wave of T801,T802
NG
Check C838,C806 and change T801,T802
OK
Check connecter & lamp
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