Guides · Updated
Headphones only playing in one ear? How to fix it
Sound comes from one side and the other is silent or faint. Work out whether it's a setting, the connection or the headphones themselves, in about five minutes.
Step 1: Test each channel
- Channels to test, one at a time
- 2
- About how long these checks take
- 5 min
- Steps, from settings to repair
- 5
Open the left right audio test and play the tone on the left channel, then the right. Each should come from one side only.
| What you hear | Likely cause | Fix |
|---|---|---|
| One side silent on its own channel | Connection, cable or that earpiece | Steps 3 to 5 |
| One side quiet, not silent | Balance slider off centre, or a blocked earbud mesh | Step 2, then clean the mesh (Step 3) |
| Both sides play both tones | Mono audio is on | Turn off mono audio (Step 2) |
| Tones come from the wrong side | Headphones on the wrong way round | Swap them over |
| Silent side crackles when the cable moves | Broken wire in the cable | New cable or headphones (Step 4) |
| One earbud won't play over Bluetooth | Earbuds out of sync | Reset them in the case and re-pair (Step 3) |
Step 2: Check balance and mono audio
A balance slider pushed to one side makes the other side quiet or silent.
- Windows 11: open Settings > System > Sound, select your headphones, and check the Left channel and Right channel volumes match. Mono audio is under Settings > Accessibility > Audio.
- Mac: open System Settings > Sound, select your headphones under Output and centre the Balance slider. Mono audio is the "Play stereo audio as mono" option in System Settings > Accessibility > Audio.
- Phones: Android and iOS have balance and mono audio options in their Accessibility settings.
Step 3: Check the connection
For wired headphones, push the plug all the way in. A plug that's half in often plays one side only. Check the jack for lint, and try another device.
For Bluetooth earbuds, put both back in the case, close it, and take them out again. If one still won't play, forget the device in your Bluetooth settings and pair it again. Clean the mesh of the silent earbud gently with a dry, soft brush.
Step 4: Find a damaged cable
Play the tone on both channels and gently bend the cable near the plug and where it enters each earcup. If the silent side crackles or comes back while you bend it, a wire inside is broken. That needs a new cable, or new headphones if the cable isn't removable.
Step 5: Repair or replace
If one side is silent on every device and the settings are fine, the driver in that earpiece has failed. Check the warranty, as many brands replace single earbuds or repair headphones. Run the left right audio test again on any replacement to confirm both channels work.
Tests used in this guide
Sound test
Free online speaker and headphone test. Play test tones, check left and right channels, sweep the frequency range and adjust volume and balance.
Open the testLeft right audio test
Free left and right audio test. Play a tone in one ear at a time to check your headphones or speakers are on the right side and both channels work.
Open the test
Run the full video call check
Make sure people can see and hear you before the meeting. 4 tests, one after another: Microphone test → Webcam test → Sound test → Network test.
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