23" LCD Color Monitor Dell SP2309Wc
57
No Backlight
Check R802 =13V
NG
OK
Check adapter or MB
Check ON/OFF signal
Check Interface board
NG
OK
Check IC801 PIN12=13V
NG
OK
Change Q804, Q803
Check IC801 PIN10, 9 have the output of square wave at short time
NG
OK
Change IC801
Check Q803,Q809 PIN5, 6, 7, 8 have the output of square wave at short time.
NG
OK
Check Q802, Q809,Q810, Q811, Q805 ,Q806
Check the output of T801,T802
Check connecter & lamp
OK
NG
Change T801,T802
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