| 故障表现为：灯亮不开机 分析与检修：用户报修故障灯亮不开机，上门通电检测，待机电压+5VSB正常，测量12V和24V无电压输出，测量开机PS脚信号ON/OFF电压正常高电平，量IC11A的PS信号输入脚电压不正常，测量IC11A的3脚电压正常。测量一脚电压也正常。考虑应该是IC11A不良引起的，更换IC11A故障机修到这里，终于修好值得探讨。，机器正常。 |
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