BenQ G2010W, Service Manual

Page: 37 / 41

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