ViewSonic VX1933W Service Manual page 79

6.2 No Power & Power LED Off
No power
Check primary
rectifier voltage
Check pin5 of
IC802 voltage
about 2.3V
Check pin4of IC802
voltage about300 V
Check pin7 of IC802
voltage is 16V
Is there instantaneously
pulse wave on pin8
END
ViewSonic Corporation
Check circuit
if short
Check F801,
P801,,RT801, D801
Check R833, R835,
R805, R834, R807
Check R808,R806
Check FB801,D803
Check IC802
76 CONFIDENTIAL – DO NOT COPY
Check IC802,
C804, T801
VX2433wm-1
VX2433wm-CN