ViewSonic VA1930wm-1 - Page 43

ViewSonic Corporation Confidential - Do Not Copy VA1930wm-1
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2. No Power & Power LED Off
No power
Check primary
rectifier voltage
Check IC802,
C804, T801,
Check circuit
if short
Check F801, P801,
RT,801,D801
Check pin6 of IC802
voltage about 12V
CheckC810,D803,C807,
Check pin2 of IC802
voltage about 2V
Check primary OVP, OLP
and secondary feedback,
Check pin1 of IC802
voltage is below 1V
Check R811, R810,
R809, R808,R814
END