Dell 1908FPC - Page 52

19" LCD Color Monitor Dell 1908FPC
52
No Backlight
Check CN902=12V
NG
OK
Check adapter and F902
Check ON/OFF signal
Check Interface board or main board
NG
OK
Check IC801 PIN2=5V
NG
OK
Change on/off circuit
Check IC801 PIN13 have triangle wave
NG
OK
Change IC801
Check IC801 PIN1/PIN15 PWM wave
NG
OK
Check Q805/Q806
Check the output of T801, T802
Check connecter & lamp
OK
NG
Change T801, T802