No Power & Led Off - Acer AL1706 Service Manual

No power
&LED off
YES
Check primary
rectifier voltage
YES
Check pin3 of IC802
voltage about 1V
YES
Check pin2 of IC802
voltage about 2V
YES
Check pin1 of IC802
voltage is 5.8V
YES
END
2.2 DC output voltage is unstable
NO
Check circuit if short
YES
Check
F801, F802,
P801, D801
Check R801,
NO
R805, R822,
R823, R817
NO
Check R803,
R807, R824,
R825
NO
Check R812,
R816, C818
NO
Check IC802,
C805, T801
31