Symptoms
- Playback is silent even though the recording light was on
- Audio is extremely quiet or muffled
- Only one channel plays back in stereo recordings
Likely causes
- CommonMicrophone input level set too lowManual gain settings left too low will record barely audible sound.
- CommonMicrophone port covered or obstructedA case, hand, or pocket lint can muffle the built-in mic.
- PossibleWrong recording mode selectedSome modes prioritize distant conference audio and sound quiet up close, or vice versa.
- PossibleExternal microphone plugged in but not workingThe device may default to an external mic input even if nothing usable is connected.
- Less commonDamaged internal microphoneDrops or moisture exposure can damage the microphone element.
What to do
- Check the input level or gain setting and raise it if set low.
- Make sure nothing is covering the microphone port, including a case or your hand.
- Unplug any external microphone to confirm it's not the active input.
- Try the correct recording mode for your situation, such as voice versus meeting mode.
- Do a short test recording close to the mic and check the resulting volume.
- Check for a firmware update that might address audio bugs.
- If recordings stay silent with no obstruction and correct settings, the microphone hardware may be damaged.
When to call a pro
If a test recording stays silent after checking settings and obstructions, a repair shop or manufacturer service center can check the internal microphone.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.