I almost threw away a perfectly good pair of headphones because the right side stopped working. I was already browsing replacements when I decided to try one last thing. That thing worked. The headphones are still working six months later.

Most “broken” headphones are not broken. They are dirty or misconfigured.

Check the Software First (30 Seconds)

Before you touch any hardware, open your device’s audio balance settings. On iPhone: Settings > Accessibility > Audio/Visual > Balance. On Android: Settings > Accessibility > Audio adjustment. On Windows: Sound settings > Device properties > Balance. On Mac: System Settings > Sound > Balance.

I have “fixed” headphones for three different people just by centering the balance slider. Someone had bumped it all the way left without noticing.

Clean the Headphone Jack (The Actual Fix, 90% of the Time)

Lint. Pocket lint, specifically. It compacts into the headphone jack or USB-C port every time you plug in the cable. Over months, it forms a dense plug that prevents the connector from seating fully.

1. Power off your device.
2. Take a wooden toothpick or a plastic dental pick. Never metal. Metal can short contacts.
3. Gently scrape around the inside of the port, focusing on the bottom where lint compacts.
4. You will likely pull out a surprising amount of gray fluff.
5. Blow gently into the port or use compressed air from a distance.
6. Plug in the headphones. If the connector now clicks in more firmly than before, that was the problem.

Test the Cable (If Cleaning Did Not Work)

Plug the headphones in and play audio. Gently wiggle the cable at different points—near the plug, near the earpiece, and along the length. If sound cuts in and out at a specific spot, the wire is broken internally at that point.

A cable break near the plug is fixable with a $5 replacement jack and basic soldering. A break near the earpiece is harder. If the headphones cost less than $40, replacement is usually cheaper than repair at that point.