Acer AL1917W

Acer Service Manual
20
Chapter 6- TROUBLE SHOOTING
1. No 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 3V
Check primary OVP, OLP
and secondary feedback,
OVP circuit
Check pin1 of IC802
voltage is below 1V
Check R811, R810,
R809, R808,R814
END