Then plug the power of the stereo into the socket.
3. Then connect the audio lines of the two channels to the sound system.
4. Then make sure that the audio power is turned on.
5. Then make sure the volume is not turned to the minimum, and you can hear the sound after opening the copyright certificate.
Finally, if there is no problem, the stereo is successfully connected to the TV.
The simplest way is to add an optical energy 70 1 card, and the sending card should use 702 702 with audio output. No matter how far it travels, there is no problem. The audio signal is converted into a digital signal by 702, and then converted into an audio signal by light energy 70 1 to the power amplifier, and the speaker is connected with the power amplifier.