家电维修社欢迎你! 美的MC-EP201电磁炉,上电开机後出现“开机一闪指示灯全灭”【故障】:测整机+18V、+5V对地电压均正常。但一启动控制电路板上dianyuan电源按钮开关下指示灯一闪“全灭”,经检查为三极管Q90、NPN基极B与集电极C“击穿”,导致“出现以上【故障】”更换三极管Q90後整机正常。友情提示,文章来自互联网收集,欢迎你到论坛技术交流请点击这里www.jdwx.cn |
|Archiver|手机版|家电维修论坛
( 蜀ICP备19011473号-4 川公网安备51102502000164号 )
GMT+8, 2025-7-18 04:57 , Processed in 0.131746 second(s), 17 queries .
Powered by Discuz! X3.5
© 2001-2025 Discuz! Team.