KV--G25T1开机后待机指示灯亮但无光栅无声音 分析与检修：经开机检查与观察，开关电源+B端无电压输出，怀疑行输出级有短路，故将行管Q802集电焊开，但故障现象依旧。再进一步测量IC300(TDA8366)第(50)脚(保护端)电压为0．25V，说明保护电路已启动 |
|小黑屋|最新贴|维修网
( 粤ICP备09047344号 ) 
GMT+8, 2025-5-25 13:42 , Processed in 5.258277 second(s), 26 queries .
Powered by Discuz! X3.4
Copyright © 2001-2021, Tencent Cloud.
