Symptoms
- Picture is fine but no audio
- Sound worked before, now silent
- Sound only from one source, not others
- Volume up but nothing audible
Likely causes
- CommonAudio routed elsewhere or mutedMany people connect external speakers/soundbar and forget the projector's own audio is muted or off.
- CommonWrong audio output setting on the sourceA streaming device or laptop may be set to output audio to a different device.
- PossibleHDMI audio not passing throughSome HDMI cables, splitters, or adapters don't carry audio properly.
- PossibleBuilt-in speaker volume very low or offProjector menus often have a separate internal-speaker volume from the remote volume.
- Less commonFailed internal speakerMore likely if it worked before and nothing in settings changed.
What to do
- Check the projector's own volume level and mute status in its menu, separate from any TV remote you might be using.
- Confirm the source device's audio output is set to the projector or the correct HDMI port, not headphones or another device.
- Try a different HDMI cable, since some budget cables don't reliably carry audio.
- Test another source (like a phone via HDMI adapter) to see if sound works from anything.
- If you're using external speakers, confirm they're the actual audio path and are powered on.
- Check for an 'audio out' setting in the projector menu that may need switching from 'built-in' to 'HDMI' or vice versa.
When to call a pro
If no source or cable combination produces sound and settings look correct, the internal speaker may need repair.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.