A pair of headphones with audio cutting out on one side can be a common problem. Often, the issue is a broken or damaged wire near the plug or inside the ear cup. This guide provides an easy, do-it-yourself approach to repairing those wires and restoring your headphones’ full sound.
Step 1: Confirm the Source of the Issue
• Test your headphones on more than one device (phone, computer, etc.).
• If the same side is silent no matter the device, the headphones themselves need repair.
• If the problem shifts from left to right depending on the device or jack, the issue may be related to the audio source rather than the headphones.
Step 2: Gather Your Tools
• Soldering iron (small, low-wattage)
• Solder (rosin-core is usually recommended for electronics)
• Wire strippers or a sharp knife
• Heat-shrink tubing or electrical tape
• Small screwdriver set (if you need to open the ear cup)
• Replacement headphone plug (if the current plug is damaged)
Step 3: Inspect the Headphone Cable
Check for visible signs of wear or damage along the cable:
• Frayed wiring
• Bends or kinks near the plug
• Bare copper showing through the insulation
These trouble spots often indicate where the sound may be cutting out. Gently move and flex the wire while playing audio to see if there’s an intermittent connection.
Step 4: Repair or Replace the Plug (Most Common Fix)
- Cut and Strip the Cable
Remove the faulty or damaged plug by slicing the cable a couple of inches above the plug. Use wire strippers to remove about half an inch of insulation from the cable’s end, revealing two or three internal wires. - Identify Internal Wires
Headphone cables typically have left (L), right (R), and ground (common) wires. They may be color-coded (red for right, green or blue for left, and bare/copper for ground), or they might have enamel coatings in place of traditional insulation. - Prep the Wires
If your wires have an enamel coating, carefully burn off or strip away the coating with the soldering iron or fine sandpaper. Twist the same-color strands together, making sure they’re neat. - Solder New Plug
Disassemble the replacement headphone plug so you can see the terminals inside. Typically:
• Tip: Left (L)
• Ring: Right (R)
• Sleeve: Ground (common)
Heat each terminal briefly with the soldering iron, then apply a small amount of solder. Insert the correct wire (L, R, Ground) into each terminal and heat it again so the solder flows around the wire. - Insulate and Reassemble
Slide heat-shrink tubing over each solder joint or use electrical tape to prevent short circuits. Reassemble the plug housing, making sure no wires touch each other improperly.
Step 5: Inspect Wiring Inside the Ear Cup (If Needed)
If replacing or repairing the plug doesn’t fix the problem, the wiring inside one ear cup could be damaged.
- Use the appropriate screwdriver to remove any screws.
- Gently open the cup, watching for thin wires.
- Look for loose or broken connections where wires attach to the speaker driver.
- Solder any disconnected wires back into place. If the solder pads on the driver are labeled (+/- or L/R), match the wire colors accordingly.
Step 6: Test Your Work
• Plug the headphones into an audio source at a low volume to check that both sides work.
• Lightly wiggle the cable near the solder points and plug to ensure there is no crackling or cutout.
Links to the most popular headphone manufacturers: Beats, Bose, Klipsch, Master & Dynamic, Monster, Philips, Sennheiser, Skullcandy, and Sony.
Safety Reminders
Turn off and unplug your soldering iron after use.
Allow the iron to cool on a heat-resistant stand before storing it.
Work in a well-ventilated area to avoid breathing in solder fumes.
Repairing headphones that only have sound on one side typically involves finding and fixing a faulty connection. In many cases, re-soldering or replacing the plug solves the problem. If the trouble remains, it could be inside the ear cup wiring, which can also be repaired with a careful approach. With a few simple tools, a bit of patience, and the right guidance, you can restore stereo sound to your favorite headphones without having to buy a new pair.
Do you have an easier way to fix audio issues on a pair of headphones? Please leave a comment below.
Written by Keith Schneerer
Certified Appliance Tech · Founder, RemoveAndReplace.com
Keith has spent 30+ years repairing machines, starting as a military mechanic and later maintaining food processing equipment before moving into appliance repair. He founded RemoveAndReplace.com to share field-tested repair advice.
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My headphones only work from the right side. What should I do?
Kat303,
If you have checked the wiring then the issue is in the speaker or the wires that are soldered to the speakers. You can try disassembling the headphones and checking the speakers to see if they are damaged or the wire is loose.
-RR
I had an old pair of Cyber acoustics headphones with microphones. One side stopped working so I bought another pair. The new pair isn’t working either, I only still get sound just on one side. I doubt it’s the wiring. What else can be wrong.
Erik,
What brand of headphones? Also is the sound only coming from the right side? Have you checked to see if the wiring above the jack is causing the issue by bending it back and forth while listening?
-RR
I had the mic on and high volume. The mic was recording the sound from the head phones and later sending it back to them repeatedly. An irritating noise. And about 5 minutes later I noticed only the right speaker worked. I have no idea if that noise had something to do with it or if a cable have snapped off over time.
Jon,
If the sound is coming out of only one side on your Skullcandy headphones, you can rewire them with an affordable kit or buy new. Just do the math and see what makes more financial sense. Usually if a pair of headphones cost over $60 US dollars, it is worth fixing. If worth lower, buy new but buy headphones that have the detachable wire such as Bose headphones. Bose SoundTrue Headphones have the audio wire that comes off. This is a great feature as if the sound stops working in one or both ears, you simply buy a new audio cord and plug it in.
-RR
I have a Pair of Skullcandy headphones, and the sound has stopped on the left side, what should I do invest in new head phones or try to fix them? Thanks for reading and for any advice.