Power Board - AOC LM560s Service Manual

15" LCD Color Monitor

9.2.2 Power Board

Check to CN102 pin12 = 12V
OK
Check the voltage of C905(+)
OK
Check start voltage for the pin3 of IC901
OK
Check the auxiliary voltage is smaller than 20V
OK
Check D910, D912, IC902, IC903
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NG
NG
NG
NG
NG
33
Check Interface board
Check AC line volt 120V or 220V
Change F901; check BD901, Q903, and IC901
Check R906, R907, IC901
1) Check IC902, IC903, ZD901
2) Check Q901, Q902...OVP circuit
AOC LM560s