本文说的无声音故障是指在各种信源输入状态下均无声音，但图像显示正常，其检修框图如图1所示，仅供大家参考。另附：TCL MS99机芯代表的机型有L32E5300A、L32E5390A- 3D 、L37E5300A、L39F3390A -3D、L40V8200- 3D、L42E5300A、L42Z11A-3D、L43E5300A-3D、L43E5390A-3D、L43F3390A-3D、L43V7300A-3D、L46E5300A、L46E5300A-3D、L46V7300A-3D、L46Z11A-3D、L48E5300A-3D、L48E5390A-3D、L48F3390A-3D、L55E5300A -3D、L55E5390A-3D、 L55F3390A-3D、L55V7300A-3D等。