Acer AL1922R AL1922r Service Guide - Page 36

2. No picture (LED is orange) No picture Measure U201 PIN2=2.5V U202 PIN2=3.3V OK NG X401 oscillate waveforms are normal OK NG Replace U201, U202 Replace X401 Check if the sync signal from computer is output and video cable is connected normally NG OK Replace U401 Input the sync signal of computer, or change the cable 36