Acer AL1706

32
END
Output Voltage
Unstable
Check feedback
circuit
Check reference
voltage
Check Vbe of 801
below 0.3V
Check Vpin1-2 of IC801
about 1V
Check Vpin3-4 of
IC801 about 6V
Check pinR of IC801
Check circuit if short
Check R810,
R811
Check
R809, R814
Check C815,
D806, R812
Check R809,
R814, IC801,
R818
Check Q801,
Q802
Check ZD801,
ZD802, ZD803,
D803, D805
YES
YES
NG NG
YES
NG NG
YES
NG NG
YES
YES
YES
YES
YES