<p>请教大法吧内，电视KDL-55R580C连接回音壁CT390无声音。<br/>这款电视我没有找到光纤连接孔，无法使用光纤连接。现在是HDMI 1 (ARC)连接回音壁HDMI(ARC)，电信盒子HDMI连接电视HDMI2，电信盒子一端已使用屏蔽CEC连接器，但是就是没有声音。<br/>关闭机顶盒使用U盘播放电影，选择电视音响，电视正常有声音，但是选择音响系统，回音壁还是没有声音。特像吧内求救！<img class="BDE_Smiley" width="30" height="30" src="https://static-wenda.zhaihai.com/data/attach/2020/0408/q5yxku0d2vi1380.png"/><img class="BDE_Smiley" width="30" height="30" src="https://static-wenda.zhaihai.com/data/attach/2020/0408/q5yxku0d2vi1380.png"/><img class="BDE_Smiley" width="30" height="30" src="https://static-wenda.zhaihai.com/data/attach/2020/0408/q5yxku0d2vi1380.png"/><br/><img class="BDE_Image" src="https://static-wenda.zhaihai.com/data/attach/2020/0408/vkhiwogzbk11381.png" width="560" height="746"/><br/><img class="BDE_Image" src="https://static-wenda.zhaihai.com/data/attach/2020/0408/ky3mphbxyj21382.png" width="560" height="420"/><br/><img class="BDE_Image" src="https://static-wenda.zhaihai.com/data/attach/2020/0408/iutn4nca21n1383.png" width="560" height="746"/><br/><img class="BDE_Image" src="https://static-wenda.zhaihai.com/data/attach/2020/0408/w0hmtopmayc1384.png" width="560" height="746"/><br/> </p><p></p>