LG Flatron L1718S - Unstable DC Output Voltage

17
3. DC output voltage is unstable
Check R810, R811
Check feedback
circuit
Check Vpin3-4 of
IC801 about 6V
Check Vpin1-2 of
IC801 about 1V
Check C815,
D806, R812
Check R809,
R814
END
Output Voltage Unstable
Check Vbe of
Q801 below 0.3V
Check circuit if
short
Check ZD801,
ZD802, ZD803,
D803, D805
Check Q801, Q802
Check reference
voltage
Check Pin R of
IC803 voltage
about 2.5V
Check R809,
R814, IC801,
R818