BenQ G2010WP Service Manual page 37

Power trouble shooting_2
DC output voltage is unstable
Output Voltage Unstable
Check Vbe of
Q801 below
Check reference
voltage
Check feedback
circuit
END
Check circuit if
short
Check Q801, Q802
Check Pin R of
IC803 voltage
Check R810, R811
Check Vpin3-4 of
IC801 about 6V
Check Vpin1-2
of IC801 about
Check R809,
R814
37
Check ZD801,
ZD802 , ZD803 ,
Check R809, R814,
IC801, R818
Check C815,
D806 , R812