击机不亮后,测量+B=0,检查电源电路无故障,查遥控控制电路N901#2R954,V933均正常,测量N901#42 5V #33(RESET)=0V,正常应为4.8V可见故障位于RESET电路,经检查R961虚焊导致V930截止而无REST电压输出造成CPU不工作,焊接好R961后机器正常。 |
|小黑屋|最新贴|维修网
( 粤ICP备09047344号 )
GMT+8, 2025-5-10 00:07 , Processed in 0.430564 second(s), 22 queries .
Powered by Discuz! X3.4
Copyright © 2001-2021, Tencent Cloud.