Dell E1709Wc Service Manual page 46

17" LCD Color Monitor
2.) W / LED, No Backlight
Check CN902 pin4, 5 = 12V
Check IC801 PIN12=12V
Check IC801 PIN10, 9 have the output of square wave at short time
Check Q802 PIN5, 6, 7, 8 have the output of square wave at short time.
Check connecter & lamp
OK
NG
Check ON/OFF signal
OK
OK
NG
NG
OK
NG
OK
Check the output of T801
OK
NG
Check adapter or MB
NG
Check Interface board
Change Q808, Q805
Change IC801
Check Q801, Q804, Q811, Q812 and Q802
46
Change T801
Dell E1709Wc