Acer AL1706 AL1706 Service Guide - Page 32

Output Voltage Unstable NG Check Vbe of 801 below 0.3V YES YES Check circuit if short YES Check Q801, Q802 NG Check ZD801, ZD802, ZD803, D803, D805 NG Check reference voltage YES YES Check pinR of IC801 YES Check R810, R811 NG Check R809, R814, IC801, R818 Check feedback circuit YES END NG Check Vpin3-4 of IC801 about 6V YES NG Check C815, D806, R812 Check Vpin1-2 of IC801 about 1V YES Check R809, R814 32