Acer V193W - bm - 19" LCD Monitor - Troubleshooting: No Backlight (W;LED)

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W/LED No Backlight
Check the 14V voltage input
Check the adapter
Check ON/OFF signal
Check Interface board
Check IC801 pin12=12V?
Change Q805.Q808 or Q810
Check the pin9&10 of IC801 have PWM wave
Change Q801/Q804/Q811/Q812
Replace IC801
Check the resonant wave
of pin3 & pin7 for T801
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