1. No Sound of Apollo S40？🔥🔥🔥🔥

Please try these steps to solve the issue:

1. Please increase the volume of the soundbar. Press “VOLUME UP” on the remote control or on the top of your sound bar.
2. Press “MUTE” on the remote to ensure the sound bar is not muted.
3. Press “INPUT” on the remote or on the top of your sound bar to select a different input source.
4. If there is no sound when using the Digital Optical or HDMI (ARC) input mode, please check if the below setting is correct: 

(A) Try to set the TV audio output format to  PCM;

(B) Connect directly to your Blu-ray/another source, some TVs do not pass through digital audio.

On digital inputs, the LED display will flash “----” rapidly if an unsupported format is present, please set the source to output PCM.