How to Replace Bose QC35 I and II Right Side Metal Hinge Swivel

Did one side of your Bose QC 35's break off? If so, they likely broke at this swivel junction which is one of the more common issues with the QC 35's. In this guide, we show you how to replace the swivel.

 

If you would prefer to read a written repair guide, check that out below. Or if the tool cost seems prohibitive for a one time repair and you would prefer that we complete this repair for you, check out our Repair Catalog to see if we offer repair services for this device. 

Are you a business? We offer wholesale discounts on our repair services if you are sending numerous units in for repair or want to send us continuing batches of devices for repair on a regular basis. Contact our support team for more info Info@JoesGE.com (This email is only for wholesale inquiries, please contact Support@JoesGE.com for other inquiries).

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Repair Difficulty: Difficult (Extensive tooling and soldering required)

Time to complete: 60-90 Minutes

The tools and parts that you will need for this repair:

 

      1. Right Hinge Swivel (Choose your color) and the Right Hinge Arm (Not always broken, but most of the time it breaks with the swivel) **In some instances, your swivel is not actually broken, but rather the screw has come out of your swivel (Refer to the beginning of step 3). If this is the case, simply order the Screw in the color that you need. 
      2. Repair Kit (T8 Bit, Phillips, Flat Head, and precision tweezers are all included)
      3. 2X T8 Screwdrivers (If you buy our Repair Kit there is a T8 bit included)
      4. A soldering iron (around 15 watts is good for small electronics and would be cheaper than purchasing a temperature variable unit although it would not work as well).
      5. Solder Flux (To ensure clean solder joints)
      6. A Small Phillips Screwdriver 
      7. A Small Flat Edge Screwdriver (Not required, but useful for removing old mesh and tape as well as the main wire box cover from inside of the ear cup)
      8. Some Precision Tweezers
      9. Double sided tape (For securing the R and L mesh back to the inside of the cup. The manufacturer tape is not usually reusable)
      10. Some T8000 Glue for securing the main wire box cover

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1. Remove the Ear Pad, Mesh, and Main wire cover

Start by gripping the lower side of the ear pad with a few fingers on the outside and inside of it then pull it up and towards the center of the speaker. It will take some force but should just pop out. (You can also watch This Part of the Video to see how its done)

Removing the ear pad from the Right side of the headphones

 

With the ear pad removed, you can now pull off the mesh from the inside of the speaker housing. Start from the left side and gently pull it up (The mesh is only held on by double sided tape and its normal for a small amount of the mesh to rip off and stay connected to the tape)

Removing the mesh from the inside of the speaker cup

 

With the mesh removed, you will see a boxy part of the headphones that sticks up underneath it. There is a lid glued onto this box that you will need to remove. You can set your heat gun to ~250 degrees Fahrenheit (~121 Celsius) and move it along the edge of the lid for a bit to warm up the adhesive. (It might be helpful to watch This Part in the Video)

IMPORTANT: Be very careful to avoid applying heat to the speaker drive in the headphones as it can melt and will need to be replaced if it is. If you are using a hairdryer or other hot air device that does not have such a direct flow as the heat gun pictured, be even more cautious.

The main wire box

Heating up the edge of the lid

 

 

With the cover heated up, you can use a Small Flat Edge Screwdriver to gently pry up the edge of the lid like so. 

Prying up the main wire box lid

 

2. Remove the Main Wire And Ear Cup

Now its time to unsolder the main wire. There are a lot of small wires that need to be unsoldered and its easiest to take a photo of them before you start de-soldering them so that you can ensure that they are soldered back to the correct connection when you reassemble the headphones.

We recommend using a pair of tweezers to hold each wire and pull it away when you heat up the solder joint. 

Desoldering the main wire

 

Next, use your screwdriver or pry tool to pop the hinge arm out of the speaker cup on the side opposite of the main wire, then repeat on the main wire side. (It might be helpful to watch this step in The Video

Prying away the hinge arm from the speaker cup

 

Once you have loosened the ear cup from the hinge, pull the main wire entirely out of the ear cup so that you can set the ear cup to the side. 

Pulling the main wire out of the speaker cup

 

If you ordered a new Hinge Arm, go ahead and remove the two Phillips screws that hold both of the pieces together. If you did not order a new one and your current set is fine, just remove the two screws from the hinge arm.

Removing the two Phillips head screws that are in the hinge arm

 

Check the main wire to see if there are any loose pieces of the old swivel on it and remove them and set them away from your new parts.

 Removing the old swivel pieces from the main wire

 

 

3. Remove the Old Swivel

*Some of the photos in the rest of the article are from the left side of the headphones but the process is the same* 

This is the part where having two T8 Screwdrivers comes in really handy. There are two screws that connect to each other to lock into place and hold the swivel into the headband. Using a screwdriver on either end, loosen the screw on the right until the small one comes out. The longer screw cannot turn since it is squared off so if you feel a lot of resistance turning one screw, try the other one. In the photo below, you would want to loosen the screw on the right.

Using two T8 screwdrivers to remove the two screws that hold the swivel in place

 

Now use your thinnest screwdriver to push on the threaded end of the long screw until it comes out of its slot. This will take a good amount of effort. 

Pushing the long screw out of its slot

 

With the swivel free, you can now slide it out of the headband. Be careful to not lose any of the washers that are installed in side of the swivel. There should be one on one side, and five on the other side. 

Be sure to save the washers as you will need them for reassembly

 

Slide the swivel off of the main wire. If you previously had glued or taped the swivel it might be harder to slide it off of the wire and we would recommend trying to carefully clean some of that glue off of the swivel with a Flat Edge Screwdriver so that the swivel can slide off of the wire easier.

Sliding the swivel off of the main wire

 

4. Install the New Swivel

 Twist the small wires at the end of the main wire with your fingers so that they can more easily be threaded through the new swivel.

Twisting the main wire so that you can thread it through the swivel

 

Slide the main wire through the new swivel.

Threading the main wire through the new swivel

 

Position the swivel close to the headband then articulate the length adjustment on the headband a few times to make sure that you did not pull too much wire out of it when removing the old swivel.

Articulating the headband adjustment to make sure there is enough wire

 

Reinstall the washers into the new swivel; Four of them on the deeper side of the swivel and one of them on the shallower side.

Reinstalling the washers into the swivel

 

Slide the swivel into the headband, making sure to not lose any of silver washers.

Sliding the swivel into the headband

 

Reinstall the two screws that hold the swivel into place. You will see that on the longer screw, it is squared off just below the head of the screw, that square part needs to be seated in the side of the headband that is also squared off so that the screw cannot turn. 

The long screw goes in the side that is square, to match the square part of the screw 

 

Having two screwdrivers to reinstall the screws is nice but not necessary. Just tighten the shorter screw until it is snug, then test the swivel to make sure that it moves somewhat freely. 

Testing the swivel to make sure it spins freely 

 

5. Reconnect the Ear Cup

 Place the outside half of the hinge arm over the new swivel.

Placing the new hinge arm onto the new swivel 

 

Push the wire into the hinge arm channel. Using a screwdriver to make sure that the wire is pressed in as far as it can go is a good practice. 

Placing the wire into the channel in the hinge arm

Pushing the wire into its place

 Using a screwdriver to push the wire into place

 

Install the other half of the hinge arm and install the two Phillips head screws so that the two halves are secured together. Once you have installed the screws, twist the hinge arm and fold it to make sure that it can rotate and fold smoothly. 

 Insert the two Phillips head screws into the hinge arm

 

Once again, twist the wires with your fingers so that they are as small as possible, then route the main wire through the hole in the ear cup. 

Pushing the main wire through the hole in the ear cup

 

Push both sides of the hinge arm into their corresponding hole in the speaker cup (Start with the side that the main wire goes through).

Installing the hinge arm into the speaker cup

 

6. Re solder the Main Wire

You will need to solder each one of the small wires individually. If you took a photo before desoldering the wires, reference that as you solder them, otherwise, feel free to reference the one that we use below :)

When soldering the wires in place, we recommend tinning the end of each wire and using some solder flux to make sure that your solder joints are as solid as possible. It might also be helpful to Watch This Part in the video.

 Main wire wiring schematic for the right side

 

 

Before you put the headphones back together, check to make sure that they work. Turn the power on and make sure that you hear the power up prompt and see the green and white lights turn on. If you'd like, go ahead and connect them to your phone and play some music to make sure they function. 

Making sure that the headphones work properly

 

 

7. Re install the Main wire cover, Ear Pad, and Mesh.

Apply a thin line of your T8000 glue to the edge of the box that surrounds the circuit board which you just soldered the main wire to. 

Applying a thin line of glue to the edge of the PCB box 

 

Place the lid on the box and press down all around the edge to make sure that the lid is secured in place.

*Make sure that there is not large amounts of excess glue dripping down the side of the box as it could end up in the speaker driver which might then need to be replaced. If there is glue dripping down the side of the box, you can wipe it away with a paper towel or rag.

 Pushing the lid down onto the glue

 

If you have new double sided tape, you can remove the old tape that held the mesh in place. We do this by peeling up the edge with a flat head screw driver then peeling it off. If your tape is still tacky enough to hold the mesh, there's no need to replace it. 

Peeling off the old mesh adhesive

 

Once you've installed new tape or determined the OEM tape to be tacky enough, install the speaker cover mesh making sure that the "R" would be positioned right side up with the headphones unfolded. 

Installing the ear pad mesh

 

Lastly, snap the ear pad into place. Put one side of it into the speaker cup and press on it until you hear a click then go all the way around the ear pad pressing until you hear the click. (It might be helpful to watch This Part in the Video)

Installing the ear pad

 

8. Get back to jamming out 🎶

If you have any questions feel free to shoot us an email or text and we will do our best to reply to you as quickly as possible. Please inquire using our Repair Catalog if you are wondering how much a certain repair will cost. If you do not see your item in our repair catalog, it means that we do not offer repair services for it. 

📧 Support@JoesGE.com

💬  360.362.1722

 

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