故障为黑屏无伴音屏幕的底部中间有2mm宽5mm长的亮斑，测电源各输出电压正常检查行电路及偏转电路时用手有意无意的轻拉一下偏转的四根线，结果行偏的输出端已断开接好后开机在视频状态。转换视频后光栅出现选台图声正常。 |
|小黑屋|最新贴|维修网
( 粤ICP备09047344号 ) 
GMT+8, 2025-5-10 14:28 , Processed in 0.442795 second(s), 26 queries .
Powered by Discuz! X3.4
Copyright © 2001-2021, Tencent Cloud.
