一面包车新装一只收放机。收放机在工作台上试验时,一切正常。装上车后电路不通,收放机电源指示灯不亮,电机不转。经查输入收放机的火线有电,保险完好,再次拆下收放机在工作台试验,一切正常,装上车后仍然无电。后来怀疑是收放机塑料壳和安装位置上的胶皮影响了收放机外壳搭铁,致使没有 A van newly installed a receiver. When the machine is tested on the workbench, everything is normal. After loading the car is not connected, the power light is not lit, the motor does not turn. After the investigation into the machine’s live fire radio, insurance intact, once again remove the machine in the bench test, everything is normal, still no electricity after loading the car. Later, it was suspected that the plastic housing on the receiver and mounting position affected the rubber housing on the receiver, resulting in no