ViewSonic VA1930wm-1 Service Manual page 43

2.
No Power & Power LED Off
No power
Check primary
rectifier voltage
Check pin6 of IC802
voltage about 12V
Check pin2 of IC802
voltage about 2V
Check pin1 of IC802
voltage is below 1V
ViewSonic Corporation
END
Check circuit
if short
Check F801, P801,
RT,801,D801
CheckC810,D803,C807,
Check primary OVP, OLP
and secondary feedback,
Check R811, R810,
R809, R808,R814
Confidential - Do Not Copy
40
Check IC802,
C804, T801,
VA1930wm-1