ViewSonic VA2016W - 20" LCD Monitor Service Manual page 56

20” color tft lcd display
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6.3. DC output voltage is unstable
Unstable power
Check sampling
Circuit
Check the R pin
voltage of IC803
about 2.5V
Check pin2 of
IC802 voltage
is 3V
Check pin1 of
IC802 voltage
below 1V
ViewSonic Corporation
Check R822, R823,
R824
Check the C pin
voltage of IC803 if
3V
Check R819, R820
Check R818, D804, C807 if
Change R808, R 809,
R810, R 811, R815,
END
53
short
Change R818,
D804, C807
Confidential - Do Not Copy
Change R822, R823,
R824
Change
IC803
VA2016w-2

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