论文部分内容阅读
细听机内有“咝咝”声,测量发现TA7698集成块(30)脚电压明显上升,原因是行输出管b极因线路板铜箔断裂而开路,以致其保护电路起作用。连接后,机器
Listen to the machine there is “咝 咝” sound measurements found TA7698 Manifold (30) foot voltage increased significantly because the output tube b pole due to circuit board copper rupture and open circuit, so that the protection circuit works. After connecting, the machine