Acer AT2230 - Page 31

31
W / LED, No Backlight
Check 12V input
NG
OK
Check adapter or MB
Check ON/OFF
Check Interface board
NG
OK
Check IC801
NG
OK
Change ON/OFF
NG
OK
Change IC801
Check the input of Q805, Q806
NG
Check the output of PT802
Check connector & lamp
OK
NG
Change PT802
OK
Check IC801 PIN1.15 have the output of square wave at short time
Change Q805, Q806,D801,D802,D803,Q804