Symptoms
- Only left or only right side has sound
- Sound cuts in and out on one side when the cable is moved
- Balance seems fine in one app but not another
- Problem happens with multiple pairs of headphones
Likely causes
- CommonAudio balance setting shifted to one sideSystem or app-level balance sliders can accidentally get set away from center.
- CommonDirty or debris-filled headphone jackLint or dust in the jack can prevent a full connection on one channel.
- CommonWorn or damaged cable near the plugCables often fray right at the plug or Y-split from repeated bending, causing one channel to drop.
- PossibleFailing driver (speaker) in one earcupHeadphone speakers can wear out or get damaged individually.
- PossibleBluetooth connection issue affecting one earbudTrue wireless earbuds can lose connection to one bud independently of the other.
What to do
- Check the system and app volume balance settings to confirm they're centered.
- Test the headphones on another device to see if the problem follows the headphones.
- Gently wiggle the cable near the plug while playing audio to check for an intermittent connection, which points to a cable fault.
- Clean the headphone jack on the device with compressed air.
- For true wireless earbuds, reset both buds in their case per the manufacturer's instructions and re-pair.
- Try a different pair of headphones to confirm the issue isn't the device's audio jack itself.
- If a cable fault is confirmed, avoid pulling or bending the cable at that spot until replaced.
Tools and parts
- Compressed air
Replacement headphonesSearch: “wired or wireless headphones”
When to call a pro
If the same side stays silent across multiple devices and after a wiggle test rules out the cable, the headphone driver on that side has failed and the unit needs replacing.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.