2. Then accurately find the digital audio optical fiber interface on the back of the TV according to the instructions, and insert the prepared optical cable into the interface.
3. Then you need to set it on TV. The specific steps are: setting-sound-optical fiber output mode-starting, and adjusting audio source coding output. At present, other models only need to turn on the power amplifier.
4. After the sound connection is successful, you can open the Betan market on the smart TV and watch the play with the live broadcast on demand application.