该故障发生在指示灯电路,其原因有:(1)指示灯公共电源线折断;(2)接线器XB2接触不良;(3)电阻R13、R14开路;(4)指示灯LED1、LED2击穿或引脚锈断。经检查指示灯引脚锈断较多见。更换发光颜色相同的发光二极管,故障即排除。 |
|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, 2025-8-16 23:12 , Processed in 0.418500 second(s), 17 queries .
Powered by Discuz! X3.5
© 2001-2025 Discuz! Team.