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Picture of 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.

 
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Step 1: Remove batteries

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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

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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

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

Step 4: Open her up

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At this point the top cover should lift off, revealing the mouse's innards.
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artimis36d made it!7 months ago

Thank you very much. It took me around 15 mins to complete the fix (on a second attempt).

Actually
you just need to increase the strength of the curved part (the spring),
so you can use a steel rule or whatever to slightly flatten the curved
spring, then put it back on the contacts.

After you flattened the spring, it will be harder for you to put it back on the tiny switch.
I don't have tweezers with me, I used a pair of nose pliers to put the spring back in place. My mouse is like new again.

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dmiranda81 year ago
I cant believe it worked. After some yelling and time I finally got the damn copper piece into place. THANKS!
csheng11 year ago
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!
BrandonC65 hours ago

This is a very good how to post. I love it

Michael93 made it!2 days ago
Thank you very much. Now I can use my gaming mouse back!

But putting the small copper back to it's place really needs some patience.
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vassilevb made it!4 months ago

The little metal prick took me four hours to install back in its place. My back hurts like hell. Thanks a lot for the guide!

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That's an awesome kit. where did you get that holder with magnifying glass thing?

Oh, and mine's got a LED and a soldering iron holder (they can't be seen on that picture I posted). It's so nice. (:

It's just now that I see your post. They're called "helping hands". They're cheap ($10-20 / £7-13). You can either get them from a local electronics shop or from eBay. (: Very useful clankers. (:

frEmn (author)  Azeunkn0wn2 months ago
I got mine at Harbor Freight. -http://m.harborfreight.com/helping-hands-60501.html?utm_referrer=direct%2Fnot%20provided
Zmaj0dnocaja made it!11 days ago

I managed to mess it up on the first try and I ruined the spring, but luckily though I had a broken spare mouse from which I "borrowed" a new spring, here is a tip for anyone who tries to make this repair.
The amount of tension needed to put the spring back in its place is VERY small, I found that this trick made it on the first try, good luck.

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surja.gain13 days ago

Thank you so much :) Very much appreciate your tutorial / instructable. Helped to repair my Logitech wired mouse :)

n4j1b117 days ago

Actually you don't have to pry off the slide pads. Just use a thin screw driver to make a hole on the pads and unscrew the screws just enough so that you can open up the mouse.

Thanks for the tutorial. For the step 8 I put the front end of the spring on the hook and while holding it, put the rear end in between the hooks and finally put the middle part sliding it from the side.

cheers

AndrzejR118 days ago

Just buy one of these OMRON D2fC 7N 10m and weld it youself http://www.ebay.com/itm/6-pcs-Omron-D2FC-F-7N-10M-Microswitch-for-Logitech-MX-Revolution-MX518-G3-G5-G7-/230933522393 it costs 3$ a pice

pkjær made it!23 days ago

Awesome instructable, have thrown away tons of mice, but not anymore :D

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viplav3723 days ago

Hell yea! finally got my mouse working!!!!!

The copper piece was not a big deal, just put the curved edge in its place first then do the lock thing.

the hardest part was the small white part as I didnt had right thing (did it with hands , I dare u to do it with hands in less then 30 mins!)

Hi there

I did it in just 4 minute.

1 I opened the mouse Genius

2 Looked for the microswitch

3 cleaned the microswitch with spray electronics cleaner 3 times clicking the microswitch

4 closed the mouse

5 whoa! is working again pretty fine

it worked for me as well. no need for "cleaner" actually, just blow air strongly with mouth , that's it

iswani27 days ago

it works :D

thanks

Thanks for sharing. I was hoping to do your suggestions. Then I had a hunch that the contact may be the problem because the mouse still makes a prominent click sound.

I then applied _D40 after exposing buttons just enough to soak it. I assembled it back and tried it. Amazingly it worked! I don't know how long it will function but I'm happy I don't have to really disassemble it further. Hope this helps.

Nice tutorial! Worked perfect for me! My only complaint with my mouse now is that the left click is quite loud after the fix, but it no longer dbl clicks so I am a happy man.

Thats! that fixed my problem.

at first you can hear the click and it would register either 2 clicks or no clicks.
now i need to press a little harder but it works fine. Might need to re-tension the springs again

FelipeR31 month ago

I feel like a NASA engineer now! Thanks really!

gberthia1 month ago

If you want to save yourself a lot of trouble check first to see if the white plastic button is worn out, if this is the case don't open the mechanism box. I noticed the plastic button on my mouse was curved from wear and just super glued a small piece of plastic on top of the button and it was fixed in minutes.

alexcher841 month ago

Thanks for the article. Fixed my left mouse button, which was an issue to begin with. Had to open the right mouse button clicker to use as a reference, to make sure I was putting the spring in correctly (did not remove the spring). After assembling, the left mouse button was perfect, but right one stopped clicking for whatever reason. Removed the spring on the right button, attempted to reinstall, but it would not get a good gap between the spring and metal mechanism. Reinstalled twice and no clicking still. As I was reinstalling 3rd time, I broke the inner part of the spring :( Now, no right button at all.

That brings me to a question, does anyone know where to buy replacement clicker springs? :) It's either that, or I have to get a new mouse.

frEmn (author)  alexcher841 month ago
I haven't sourced them myself, but several people in the comments have mentioned replacing the entire microswitch (either from a donor mouse or buying the part alone). If you scan through all the comments you should find it.
VictorC51 month ago
Yeeaahh I fixed it! Be patient and you'll get it!
AmeyaS2 months ago

How do you open the small rectangular box inside....I tried but just couldn't get it open...applying a bit more force caused the solder pins to slightly force out of their socket which is not right, right!!! Well..that scared me off....Now my left click is even worse than before.

Sigh! I am fed up of these mouse clicks acting up every 6-7 months and going bad by a year's end. The mice quality nowadays have decreased quite a lot...my first mouse I brought in 2004 is still hobbling on (coming to my rescue now) where as I have gone through dozens of these new fanged mice since..

Guys, is investing in a really expensive mouse a better idea or buy a el cheapo mouse and toss it in the bin in about 8-12 months time (which is mostly the mileage on those things)

you can buy new buttons to solder on, and this is usually a longer-lasting solution too, if you decent quality micro switches, which are cheaper than whole mice.
Yeah but micro switches are not available at any general local electrical store usually...it will be hard to find good quality ones at descent prices compared to buying a whole new mouse.

I managed to open my micro switch by the way, the latch was on the length sides of the small rectangular box instead of top side like in Logitech mice (mine's was Microsoft). But when I got to the small metal spring inside, I ended up bending it totally out of shape (it's very delicately shaped and placed to fit inside the micro switch), ended up switching the metal spring from the middle click (which I don't use anyway).
Wouldn't recommend it to anyone with flabby, shaky hands.. and guys, don't throw away your old mice, harvest the good micro switches inside (or at least the good metal springs inside).
Lochu911 month ago

Done it. I woke up after work and my mouse was clicking 2 three times every time i pressed the LMB. Even though i opened those many times before i had no idea this could be the reason. I thought this is probably drivers or newest win updates. worked thanks.

LexiM1 month ago

Now I know just in case

mahesh_jo1 month ago

nice instructable. last sunday i have also repaired my mouse as it was causing the same double click problem. But I desoldered the button and replaced it with an old mouse right click button.BTW cheers.

JackieW21 month ago

Thank you SOOOO much! I have a cheap Daffodil Wireless USB-hub mouse that has been functioning just fine for 7 months, then suddenly started either registering multiple clicks or no clicks at all when I hit the left mouse button. My whole purpose of buying the mouse was to make Minecraft & D3 so much easier to play (Apple mice aren't really gamer-friendly). I was so bummed at losing my gaming mouse! After scouring the internet for what could be causing my problems, I found your solution... and it worked!

My only problem was getting the "bend" in the spring right. In the end, my husband handed me another old Bright wireless mouse whose buttons were working fine but was suffering from bad contacts elsewhere. I harvested the spring off of that one (there must just be one company that makes these springs, because they looked exactly the same) and surgically implanted it in mine. Now it works just fine!

Including the time wrestling a little bit to get the spring in the right way & STAY, this took me all of maybe 15 minutes. THANK YOU!!!!

mk2001 JackieW21 month ago
Apple isn't gamer friendly
kst1821 month ago
?but I think change a new button is better.
sottinger1 month ago
I usually have doner mice that I take the button from. normally they are the same buttons all around so no big deal. good to know other ways to fix it.
sukiwayne11 month ago

This an awesome tutorial i did it within 10mins and mines working perfectly and no problems, Thankyou.

LanaM1 month ago

thanks for the info.

kjbaumga2 years ago
Excellent description. I was planning on trying it when my mouse started doing this. My mouse isn't Logitech, but apparently LOTS of mice have this problem.

But before I tried your fix, I found the following post on the Logitech forums -- amid 6 pages of complaints by people having similar issues:

"This problem is due a build up of Electro Static Field (ESF) on the plastic. ESF is most troublesome in very low humidity environments. The internal circuitry design must not be robust enough to handle the gradual build-up of ESF that can occur through use. Can't comment any more on the specifics since I'm a Mechanical Engineer and not an Electrical Engineer.

Blowing air (from your mouth, not a can of air) into the crack under the left mouse button fixes this issue because human breath is very moist. You can also recreate the problem by rubbing a piece of cloth over the left mouse button repeatedly to generate ESF." - Abhishek Shinde

Feeling a little silly, I gave it a try: I blew into my mouse, under the left button. THE PROBLEM INSTANTLY VANISHED. It has not recurred even once in over a week of continual use. (It had been happening about every 5-10 clicks, driving me nuts.) So ESF buildup is apparently the problem in some cases.

So before opening up your mouse, you'd definitely want to try this, because it is so simple.

Might as well pass along my other research. I found someone had created a software fix for a similar problem with a Microsoft mouse: Browse down the site below, and you'll find it. This is untested by me, since the above fix worked for me. I'm just passing it along for someone who might not want to open their mouse, and who gets no result from the "blowing" technique.
http://www.danieljackson.co.uk/fun/old/
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