本文显示器为Compaq原机配带的显示器TE1420Q。 故障现象1:联机上电显示器的指示灯亮,而且黄色指示变绿色指示,但无字符显示,手触屏无高压感。 分析与维修:从故障现象分析,显示器的指示灯亮且由黄转绿,说明该机的开关电源、行扫描、场扫描都是正常的。因为该机已经接受到视频信号,所以维修重点放在行电路。在线测得的行管Q408数据见表1。 This display is equipped with the Compaq original machine display TE1420Q. Symptom 1: The indicators on the power-on display are on, and the yellow indicator turns green, but no characters are displayed. Analysis and Maintenance: Analysis from the failure phenomenon, the indicator light is on and turn from yellow to green, indicating that the machine’s switching power supply, line scan, field scan are normal. Because the machine has received the video signal, so repair focus on the line circuit. The online measured Q408 data is shown in Table 1.