There's one thing we hate from old mouses and one of it is double clicking issue. This problem is caused by the old spring mechanism inside the microswitch had loosen it's tension and as the results registering clicks as double or triple clicks (or worse, not registering anything at all.)
Now, if you feel more adventurous you can follow frEmn's instructables on on how to retention your microswitch spring mechanism. But on this instructables, I'll show you on how to replace it instead. We'll be using my Razer Deathadder 3.5G for example on this instructables.
PS: Your "broken" microswitch could be repaired too! Just follow frEmn's instructables, it should be easier since you've pulled out the microswitch from the PCB.
Step 1: Getting the Microswitch
Every microswitch that has this form factor works, but if you're a heavy user (or gamer) like me I will recommend you Omron D2FC-F-7N or Omron Japan D2F-01F-T, both are actually same switches and manufactured in china, but Japan's D2F-01 passed an additional quality control in Japan but there's no real difference on them except the marking on the switches. They cost about $5.25 for 4pcs and that's pretty cheap.
You could find this at
Oh, and before you install it you must straighten the pins, use anything flat like pliers to straighten it.
Step 2: Preparing Your Tools
- Soldering Iron
- Desoldering tools as Desoldering Wick or Pump
- Pen Knife/Hobby Knife (X-Acto)
- Solder tin
Now if you never solder anything before I would recommend you to read this comic titled "Soldering is easy" by MightyOhm (it's free!) to grasp the basics of soldering and be careful that you're going to work with heat based tools, if you're still underage please have a guardian/parents on your side to watch your work and helps you if needed.
Step 3: Open the Holes!
Now let's open the holes first and then unscrew the hidden screw.
Some mouse manufactures hides the screw holes behind the label or mousefeet, you could search on the internet about your mouse or you could just try to removes everything and try to unscrew it carefully.
On this particular model, there's 3 hidden screw holding the cover from the surface facing side.
Use the blunt side of the knifes or anything thin and blunt to remove the mousefeet and carefully removes them, then poke a hole behind the label to reveal the secret screww. Use your screwdriver to unscrew the screw by turning it counter clockwise until the screw pops out. sets aside.
Step 4: Removing the Cover
Carefully, using the blunt side of the knife remove the cover by the seam lines from the front to the side. Carefully open the cover from the surface facing cover and disconnect the led cable (if any). In this particular mouse model, you'll see a ribbon data cable, do not break them (or break them, if you can solder them again). Now you might want to also clean the insides from dust and dirt.
Step 5: Removing Top PCB Screws
In able to removes the broken microswitch from the PCB, you need to unscrew the screws that hold the top PCB first. Carefully, using smaller screwdrivers turn counter clockwise and then set aside the screws. Now you can removes the scroll wheel (and clean it if necessary) and identify the broken microswitch.
Step 6: Desoldering Time.
Be careful that you're now using a heat tool to desoldering and soldering new microswitch.
Use small amount of solder tin on the tip to transfer the heat easier. I know it seems ironic that I use more solder to removes solder, but hey as long as it works.
While you melts it carefully pull the microswitch from pcb using x-acto/pen knife or anything that thin enough to pull it. Desolder every legs until you could remove the switch.
Step 7: Soldering the New Switch
This is the easiest part, put the switch legs inside the hole (be careful with the orientation!) and bent them so it can holding itself to the hole while you solder them.
Now use your soldering iron and the solder tin to solder the legs and complete the connection. Shake the board a bit to make sure everything is strong enough.
Step 8: Assembling
On this final step, you just need to reverse the fifth step and before. And then test it to see if it works.
I don't have pictures for this step, but I'm sure you can do it! (But I'm not liable for any damages from doing this, do it at your own risk!)
Thank you for reading this instructables, I'm sorry if there's any mistake in spelling or grammar. And if you like this instructables you can give it a vote on the First Time Author Contest 2016, every vote is appreciated. Thank you!