Acer P203W

38
5. No Backlight
Check C802 (+) =12V
Change F801
Check ON/OFF signal
Check main board
Check IC801 pin12=12V?
Change Q805.Q808
Check the pin9&10 of IC801 have PWM wave
Change Q801/Q804/Q811/Q812
Replace IC801
Check the resonant wave of
pin3 & pin1 for T801,T802
Check the output of T801,T802
Check Q802/Q803
Check connecter & lamp
OK
Change T801,T802
OK
OK
OK
OK
OK
NG
NG
NG
NG
NG
NG
OK