How to Replace a Worn-out Audio (AUX) Port on the Beats Solo 4 Wireless Headphones at Home (DIY Repair Guide)

Does your Beats Solo 4 Wireless (model number: A3140) produce no audio or a crackling or static noise during playback with a 3.5mm audio cable? Does the sound cut in and out when you touch the audio cable, or do the headphones fail to detect a wired connection? If you’re experiencing any of these issues, it’s time to replace the AUX port on the Beats Solo 4 wireless headphones.

In this DIY repair guide, we show you how to fix a faulty AUX port in the Beats Solo 4 wireless headphones using new OEM spares without needing technical skills or expertise. You will find all the tools required for this repair and original replacement parts below.

Want to get your headphones repaired by a professional? Send us your Beats Solo 4 Wireless headphones today, and our repair ninjas will restore them to peak working condition. Follow the link, select the issues you’re experiencing, click Continue, enter your email ID, and click Get My Estimate to view the repair cost instantly.

Repair Difficulty

Moderate / Requires 20-35 minutes to complete.

This repair involves handling delicate internal components, including wires, circuit boards, and screws. While prior soldering experience will help you complete the repair effortlessly, it’s not compulsory. With the right tools, patience, and attention to detail, you can fix the Beats Solo 4 AUX port yourself.

Replacement Parts You’ll Need

Restore your Beats Solo 4 wireless headphone’s audio quality using original replacement parts. Select the OEM spares from the drop-down menu below and bring your device back to peak working condition.

• Beats Solo 4 Wireless A3140 Audio Jack 3.5mm Port PCB Repair 820-00684 (Black) - Parts

Get an OEM replacement AUX port for your Beats Solo 4 Wireless headphones today. Click the link to visit our store, then scroll down to the Customers Also Add section to purchase the original replacement part and the tools you’ll need for this repair at a discount.

Tools You’ll Need

Before starting the Beats Solo 4 wireless AUX port replacement, gather the following tools. Using the correct instruments will help you complete the repair successfully. We used the following tools and recommend them for a safe, professional-quality DIY fix at home.

• 2.0mm Phillips Screwdriver
• Strong Metal Pry Tool
• Curved Precision Tweezers
• Soldering Iron
• Soldering Flux
• Heat Gun
• Heat-proof Anti-skid Rubber Work Mat

Not ready to invest in tools yet? Find your device in our repair catalog, select the issues it’s experiencing, and send it to us. Our repair ninjas will restore your device to peak working condition.

Step-by-Step DIY Guide to Replacing a Worn-out Audio (AUX) Port on the Beats Solo 4 Wireless Headphones at Home

In this detailed DIY repair guide, we show you how to fix the AUX port on the Beats Solo 4 wireless headphones yourself. Follow each step carefully and use the accompanying images as a visual guide to complete the repair with confidence.

Key Note: The AUX port is inside the left earcup. Check both earcups to identify the side with the audio port.

Step 1: Remove the Left Earpad Cushion

Insert a sturdy metal pry tool into the seam between the earpad cushion and the earcup. Gently work the tool up and down to separate the cushion from the earcup without damaging the retaining clips.

Step 2: Separate the Left Speaker Housing from the Earcup

Unfasten the 3 screws holding the earcup together with a 2.0mm Phillips screwdriver.

Step 3: Extract the Worn-out AUX Port

3.1. Remove the glue from on top of the connection points with precision tweezers or a pry tool. Apply heat with a heat gun or hair dryer to soften the adhesive. Do not yank the glue off the wires, as they are prone to tearing.

3.2. Unsolder the 2 sets of wires with a soldering iron set to 500°C (932°F). Take a photograph of the wire connections before desoldering to use as a reference when reconnecting them to the new AUX port.

3.3. Unfasten the 2 screws on the AUX port with a 2.0mm Phillips screwdriver and set them aside.

3.4. Insert a strong metal pry tool under the AUX port and gently work the tool up and down to separate it from the earcup housing.

Step 4: Install New AUX Port

4.1. Install the new AUX port and fasten it to the earcup housing with two 2.0mm Phillips head screws.

4.2. Solder the wires back onto the new AUX port using the photograph from Step 3.2 as reference.

Step 5: Reassemble the Beats Solo 4 Wireless Headphones

5.1. Tuck the wires under the speaker driver.

5.2. Flip the speaker housing over the earcup, align the 3 screwholes, and check whether the wires are out of the way. Finally, fasten the 3 screws on the speaker driver with the earcup housing.

5.3. Align the earpad cushion with the earcup and press down till the clips click into place.

Congratulations! Your Beats Solo 4 Wireless Bluetooth Headphones are Ready to Use!

You have successfully replaced the malfunctioning AUX port on the Beats Solo 4 wireless headphones. Check charging stability, audio quality, and playback time to confirm the device is working properly.

If you found this guide helpful and would like to try your hand at DIY gadget repair, check out our store for essential tools and spare parts. You can also check out our at-home headphone repair guides for other popular brands, including Apple, Beats, Bose, and Sony.

Have questions or suggestions about this repair? Text a repair ninja or email us, and we’ll respond as soon as we can.