Acer AL1922R AL1922r Service Guide - Page 37

3. Panel Power Circuit Measure Q402 base is high level? OK NG Check Q203 and Q204 are broken or CN503 solder? Measure U201 PIN2=2.5V U202 PIN2=3.3V OK NG Replace U201, U202 Check Correspondent component. NG OK Replace PANEL X401 oscillate waveforms are normal NG OK Replace X401 Replace U401 37