Repair Mouse With Double Click Problem

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I have a Logitech wireless laser mouse and after a year or so of use, the left click button would double click every time I tried to single click something. As can be imagined, this gets frustrating very fast. So, being the tinkerer that I am, I decided to open her up and see if it could be repaired. Sure enough, It's a pretty simple fix, if you have some common tools and a teaspoon (edit:a tablespoon) of patience. There are some very small parts involved, so you will want to make sure you ware working in a well lit, clean environment so that any parts that are dropped can be easily found. I have now performed this fix for the third time and decided to take pictures this time to share with others who may find this useful. Each time the repair lasts about 6 months to a year before needing to be redone. I imagine at some point the piece causing the problem will break, at which time the mouse will need to be replaced (unless you're determined enough to try and source parts). Good luck with your repair, I hope this helps.

EDIT: There are quite a few comments about the difficulty of step 8. I would advise that you read through some of the comments for various approaches to completing that part of the repair.

Step 1: Remove Batteries

If you are working on a wireless mouse, you will want to first open the battery cover, and remove the batteries from the mouse.

Step 2: Access Screws

On this particular model there are four screws which hold the mouse body together. These screws are located underneath the slide pads on the underside of the mouse. To remove the slide pads, gently pry the edge of the pad up with a small flat head screwdriver and peel it off. They are held in place with some sort of adhesive.

Step 3: Remove Screws

Remove the four screws with a small philips head screw driver.

Step 4: Open Her Up

At this point the top cover should lift off, revealing the mouse's innards.

Step 5: Locate the Click Mechanism That Is Causing the Problem (usually Left Click)

Depending on the mouse, there can be one, or several click mechanisms. This particular mouse has 6, with the left and right click being the main mechanism. The left click is the one causing me problems, and is likely the one you are looking for also. Locate this mechanism so we can continue the repair.

Before you proceed, be sure to notice the very tiny white button located on the top cover. This will fall loose when the cover is removed, and you will want to be sure you retain this piece to be reinstalled later.

Step 6: Open the Mechanism Box

The small rectangular box, contains the part we need access to in order to complete the repair.
To open the cover, use a small flat head screwdriver to gently pry the box cover away from the latch. This will allow the cover to lift slightly until you can do the same to the backside. Be careful not to pry too far or hard as it could damage the cover. The first time I performed this repair, I damaged the cover on mine, but thankfully it still stays in place, so there was no real harm done.

Be sure to retain the small white button to reinstall later.

Step 7: Locate, Remove, and Retension the Spring

This is the key to the repair. You must remove the very tiny copper tension spring from inside the click mechanism.

After you have removed this part, make sure the small tab has a decent curve to it. You can see in the picture how I use the screw driver to bend the curve while holding it down with my finger.

Then bend the tab up, so there will be more tension on it after it is reinstalled. You can see the before and after pictures showing how this will look.

Step 8: Reinstall Tension Spring

This is where the patience comes into play.  This is probably the most tedious and time consuming part of the repair.
To reinstall the tension spring, first attach it to the small hook at the front of the mechanism, as shown in the picture. Then use the flat head screwdriver to push the curved tab into place while keeping the rear of the spring under the small arm at the rear of the mechanism. The second picture shows what it should look like after being reinstalled. Notice the arrows pointing to the spots that need the most attention. You want all three to be correct or the mechanism will not operate properly. 

Step 9: Reassemble the Click Mechanism and Test

Next, you will need to reassemble the click mechanism. First reinstall the tiny white button into the mechanism cover (you did remember to find and set aside the tiny button right?).  The easiest way to do this is by dropping or placing it into the cover with a pair of tweezers. With one hand, pick up the cover  while keeping it upside down so the button stays in place. With the other hand, pick up the mouse body, turn it upside down, and push the cover back into place. Doing it this way will insure that the tiny white button stays in place while the mechanism is put back together.

At this point, before reassembling the mouse, set it down on the table, and give the tiny white button a few test clicks. You should notice that it is making a crisp click sound when pressed, and that it now springs back with more force than it did before. If you are not hearing and feeling a difference, you may need to open the mechanism back up and try retentioning the spring again.

If all seems well, than go ahead and put the mouse top back in place, reinstall the 4 main screws, and put the slide pads back in place. If there is not enough adhesive left to keep the slide pads on, you can add some more. Regular elmers glue stick has worked for me, or a dab of superglue would certainly do the trick.

Thanks for reading. I hope you now have a mouse that clicks properly.

47 People Made This Project!

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327 Discussions

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dmiranda8

4 years ago

I cant believe it worked. After some yelling and time I finally got the damn copper piece into place. THANKS!

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csheng1

5 years ago on Introduction

Hi, thank you very much for the great tutorial - I've tried it and my mouse is working fine. May I suggest that for step 8: Reinstall tension spring, you (1) place the curved tab (which is in the middle of the spring) at an angle on the tiny ledge of the metal piece on the mechanism first, then (2) hook the spring onto the front part of the mechanism, before finally (3) sliding the spring beneath the rear part of the mechanism?

I did not have much luck with the original action series of 2-1-3 until I tried 1-2-3 and the whole spring just slid into place while pivoting on the middle curved tab.

Hope this helps. And once again, thank you!

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JulfikarB

15 days ago

Yes its really works. I fixed my left click problem of mouse :) and my friends mouse. thank you sir for share. Found youtube video tutorial about same thing. https://youtu.be/o02eCWuHmEw

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Steve H1

Tip 17 days ago

Just try resoder smicrowitch 1st could be just lose or micro cracks need re-soldering. Worked for me.

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KorkutT

20 days ago

I did not exactly follow your steps but yet your tut encouraged me to take action. My mouse is logitech g302. Although interior seems more complicated than your tut model, parts and switches are basically same. I feared to remove the metal sheet but it seemed intact and functioning properly. So I just applied a droplet of Pattex Ultra Gel and spread it a bit, to make sure the added thickness was not too much, let it dry and re-assembled the mouse. It worked!

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RobE46

21 days ago

Brilliant Thankyou.
For me my spring looked OK - I just removed the cover and gave it a good blow.
Must have been some dust or something

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Austin31

24 days ago

Thank you it worked

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Mario36

25 days ago

If anyone is interested in a temporary software fix. Download the program "AutoHotkey". Create a text file on your desktop and paste this code in(without the quotes).

"
$LButton::

Click down

KeyWait, LButton

Click up

Hotkey, LButton, Two, on

Sleep 215

Hotkey, LButton, $LButton, on

return



Two:

return
"

Name the file to something like "left_click_fix.ahk"

The only con is you have to triple click files/folders to open them instead of double click.

You can try changing the Sleep 215 value and see if you can get double click working as normal.

But for now, this is a temporary solution that I'm using.

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GeorgR

Tip 4 months ago

Don't go all out and remove the copper spring. For most issues with mouse buttons, just take the cap off the micro switch and carefully clean the copper contacts inside with a small brush and alcohol (96% isopropyl alcohol). Chances are it will fix "bad" clicks and you won't need to remove the copper part.

1 reply
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frEmnGeorgR

Reply 5 weeks ago

Great idea! another user was also able to retension the spring in place. Lots of great ideas in the comments.

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AnandyaD

Question 2 months ago

I just can't get pass reinstalling tension spring, everytime i tried to push it inside its just keep bouncing back. My moush is Cougar Minos X5

Any help sir/mam?

1 answer
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frEmnAnandyaD

Reply 5 weeks ago

Sorry I didn't see this sooner. Were you able to complete the install? It's hard to say without seeing it, but if you read through other users comments, there is a lot of advice on different ways to get the spring installed. That is definitely the most difficult part.

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SamuelH107

6 weeks ago

One thing of note that helped me and may help a few other people. You do not actually have to remove the spring to increase the tension. I just used a push pen and bent the metal a little bit while it was still attached. It worked for me. I did it because I knew if I tooke off that copper piece I would never get it back on.

1 reply
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frEmnSamuelH107

Reply 5 weeks ago

Great idea! I never thought to approach it that way. Glad it worked.

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ssavass

7 weeks ago

I used this trick on 3Dconnexion Cad mouse and it worked! Thank you for sharing. :)

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mayapapaya16

2 months ago

I'm a 17 year old girl whose never really messed around with hardware, and I was able to do it! It only took two hours.
The main piece of advice I have is that you can test if it will actually click without putting the little black box things over the copper. All you have to do is press down on the middle bar with the mini flathead you use for the earlier steps. Should make a click noise. For me, the way I was able to do it was by understanding what needs to happen in order to make the click noise.
Basically, on the bottom of the copper piece is a little nub. This nub needs to hit the base of the area you insert it into. The copper piece itself should be folded somewhat like a lawn chair. Hopefully this helps someone

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leozimgh

2 months ago

It worked like a charm! thank you kind sir

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Yonatan24

3 months ago

If you need help repairing your mouse and don't want to mess with insides of the actual button switch, you can replace it instead! If you need any help with that I just made a video on the process:

https://www.youtube.com/watch?v=HL_lXdbJtO0

Let me know if you need any help!

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GeorgR

4 months ago

:/ <-- The face you're making when you spend 2hrs on a switch using this method, and then you realize you just did the WRONG switch, the one for the middle-button from the wheel...

.

Anyway, here is my takeaway on this method:

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* If you take out the copper spring, you will hate the world, yourself and everything else. I figured it out now, but anyway...

.

* I suggest NOT taking out the copper spring, but instead just take the cap off from the switch, and with a small brush like I did clean the parts with alcohol instead. I think that in a majority of cases, the problem is not a lack of "spring power" so you'd have to re-shape the spring, but oxidation on the parts. (I noticed the oxidation on several mice who had problems with the buttons). Sometimes it can also be dust/hair preventing proper contact. Sometimes, I noticed the copper part is not centered right, eg. with Chinese no-name switches.

This is my experience. I fixed mice now WITHOUT having to take the copper part out. (I used 96% alcohol like you can get in any drug store).

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-> soak the brush with alcohol and clean the parts inside instead. At the location of the small plastic switch, push down so the contact opens and also brush in between, or use a paper towel that you soaked with alcohol and clan between the contacts. I wouldn't recommend a Q-Tip since they "shed" hair, but you can try.

.

Wait a minute until the alcohol has evaporated, maybe with a lens check whether there's any hair etc. left, put the cap down again. (Thanks for the tip fixing the white switch with clear tape when you do this).

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Again: I do not believe you need to take out the spring! Likewise, the copper is so soft that any bending you do will likely not last long anyway, and just the re-assembling of the part, in my experience, bends everything back as it was before. You will end up like before, maybe even worse.

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jadatmag

4 months ago

Saved my mouse!