Acer AL1916 AL1916v Service Guide - Page 36

5. PWPC No Power No power Check AC line volt 110V or 220V NG OK Check AC line Check the voltage of C904(+) OK NG Check start voltage for the pin3 of IC901 OK NG Check F901, bridge rectified circuit
Check R903, R904,IC901 Check the auxiliary voltage is between 10V-16V OK NG Check D910, D911, IC902 Check IC901,T901 Check ZD901, D903 35