Acer B243W - Page 37

37
W/LED No Backlight
Check the 24V voltage input
Check the adapter
Check ON/OFF signal
Check Interface board
Check the voltage of IC801 pin2
Change Q805.Q806 or Q807
Check the pin1&15 of IC801 have PWM wave
Re
p
lace IC801
Check Q802,Q804,Q808,Q809
Drain wave
Check the output of PT801~PT812
Replace Q802,Q804,Q808,Q809
Check connecter & lamp
OK
Change PT801~PT812
OK
OK
OK
OK
OK
NG
NG
NG
NG
NG
NG