Projector is muted
Device (PC, TV, etc.) muted.
Dolby sound is not supported, exit to play again.
Profile audio format is not supported by projector. E.g. Projector supports 1080P and 1080I video won’t play audio.
VGA connection can only transmit analog signal of video not audio. External speaker is required when device is connected via VGA cable.
Encryption applied on the videos or media player which holds the video. Try more videos to define this possibility.
Exclude possibilities above, try another HDMI cable /external speaker, and a 2.0USB disk/ Micro SD card within 32G/USB hard disk within 1TB to play directly to see if both video audio available.
| Reference | URL |
|---|---|
| Manual | |