DonDerrick

The middle mouse button click on my G402 started acting up over the last 2 or 3 weeks. Sometimes clicking web links once would open two tabs instead of one, and more recently the middle mouse button has stopped working on and off - but, if I push down on the middle button very strongly, the button will still work. So, it seems that my middle mouse button is showing what are common signs of a switch failure due to being worn out.
 
It took a lot of searching to find the information to replace this button, so I thought I'd compile it someplace to make things easier for other people.
 
 
 
A) Temporary fix
 
The problem can be temporarily addressed by opening up the mouse and bending the metal pieces inside the switches back into a shape that engages the switch, but from what I've read that fix lasts weeks to months, but isn't a long-term solution. A couple of guides on how to do that are here:
 
https://community.pcgamingwiki.com/page/blog/_/features/modding-guides/double-click-problem-faulty-mouse-button-repair-r152
 
 
 
 
B) Full fix
 
A more lasting solution is to de-solder a worn button and to solder in a new one, which is what I plan to do. The switches can be replaced with different brands and models of the same shape and connector-type, but these are the original switches:
 
For the left and right buttons, the G402 uses Omron D2FC-F-7N switches, rated at 20 million clicks. - purchase link
For the middle mouse button, it uses an Omron B3F-1000 switch, rated at 1 million clicks. - purchase link
For the other buttons, it uses Himake White switches, which are rated at only 300, 000 clicks. - purchase link
 
 
To open up the G402 mouse, the plastic pads on the bottom of the mouse, the feet, need to be pulled off to reveal the screws underneath them that hold the mouse together.
 
The old feet can be put back on afterwards, though new G402 mouse feet can be ordered separately, and would probably be a more satisfying solution: purchase link
 
 
Here's a video of a person desoldering some old switches on the G402 and soldering in new switches:
 
 
 
Switch replacement options
 
There are some other brands, like TTC and HUANO. Different brands, and different versions of micro switches in the Omron D2F series vary in feel, sound, weight, and mechanical life, and which ones are used can be personal preference.
 
For example, I saw somebody mention that they like these HUANO micro switches, which are rated for 8 million clicks: purchase link
 
I really like the default left and right mouse buttons clicks on the G402, more than the left and right mouse button clicks on the G502 (because they're quieter). So, I'm going to use those switches for all the similar micro switch replacements that I make in my G402 mouse. I think that Omron D2FC-F-7N is a common switch used in different mice.
 
For more information and user feedback on the variety of choices to replace mouse button switches with, this is a great thread.
 
Here's a video demonstrating the differences between different mice that use different switches for their left and right clicks - and each example is shown which brand and model of switch is being used:
 
 
 
 
-------------------------------
 
So, I've ordered both some Omron B3F-1000 switches and some Omron D2FC-F-7N, and while I'm replacing the middle mouse button with the B3F-1000, I'm also going to replace one or two of the Himake White side switches that I use the most often with new Omron D2FC-F-7N switches, just so it won't be likely that they'll ever go bad on me and require me to open up the mouse again.
 
 
BTW, the B3F-1000 is also used for the middle mouse button in the Logitech G602. I think that the G502 uses a different switch.
 
One more source for information on the G402 internals.
 
Here's an image of the inside of a G402 mouse. The drawn-on numbers can be ignored, as they were just already on the image that I found of the open mouse. There's a much larger version of the image here.
 

 
 
Here's what the Omron D2FC-F-7N micro switches look like on their own.
 

 
 
 
And here's what the middle mouse button switch looks like on its own.
 

 
 
 
 
 
Another part I'm interested in replacing in my G402 mouse is the angled clear plastic piece that the optical sensor reflects off of, though I haven't yet looked into whether that part can be bought someplace on its own.

I would suggest you go with option two.Dont get me wrong, 4790K is a very good cpu but i recommend you upgrade to Ryzen/coffee lake cpu since you want to have good perfomance system which will last for next 5 years

There is always a chance of it leaking, but its very marginal these days. You will have more of a chance of the pump dying and failing than the liquid leaking out. With anything, its a risk vs reward thing. If you are worried about it leaking, then water cooling is NOT the way you should go. 

Just looks like video compression to me. If you want to get rid of it, you probably need to choose a different codec and bitrate.

Sweet cheers for the quick reply mate.

Yup go for it. Also send a pic of the aftermath.

Yes, you can do that.

yeah, no.
this is cheaper and much, much better:
PCPartPicker part list / Price breakdown by merchant
CPU: AMD - Ryzen 7 1800X 3.6GHz 8-Core Processor  ($239.89 @ OutletPC) 
CPU Cooler: Thermaltake - Water 3.0 Riing RGB 360 40.6 CFM Liquid CPU Cooler  ($125.30 @ Amazon) 
Motherboard: Gigabyte - X470 AORUS ULTRA GAMING ATX AM4 Motherboard  ($131.19 @ OutletPC) 
Memory: Corsair - Vengeance RGB 16GB (2 x 8GB) DDR4-3000 Memory  ($163.89 @ OutletPC) 
Storage: MyDigitalSSD - BP5e Slim 7 480GB 2.5" Solid State Drive  ($99.99 @ Amazon) 
Storage: Seagate - Barracuda 3TB 3.5" 7200RPM Internal Hard Drive  ($56.09 @ Newegg Marketplace) 
Video Card: Gigabyte - GeForce GTX 1080 Ti 11GB AORUS Video Card  ($719.99 @ Newegg) 
Case: Corsair - Carbide Series 275R (Black w/Tempered Glass) ATX Mid Tower Case  ($79.99 @ Amazon) 
Power Supply: Corsair - TXM Gold 750W 80+ Gold Certified Semi-Modular ATX Power Supply  ($69.99 @ Amazon) 
Total: $1686.32
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-07-31 03:57 EDT-0400

no thats not good for streaming, scrap one of the 1070´s and get a MUCH better CPU like a ryzen x2700
 
if you want to game and stream on the same PC Ryzen is the only option that makes sense, sure Intel will work as well but Ryzen is simply proven to work better for the job.

Hi, I have put together a parts list.  https://au.pcpartpicker.com/list/LVx8jy This will be used for video editing, recording, streaming and general gaming. I am planning to have this build completed within a month too.
 
My location is Australia and I have a max budget of around $2500 Australian Dollars. 
 
My aim is to create a white themed gaming/recording/editing (tower only) build. 
 
I currently plan on using two monitors. The main monitor will most likely be an AOC G2460PF ( A 24" 1080p 144hz monitor) and the secondary monitor an old Dell monitor at 1080p 60hz.
 
I do not need: Keyboard, mouse, headset, monitors or operating system in the budget as I already own them, are buying them later or can get it off the microsoft website (OS iso)
 
I am upgrading because I am currently on a late 2014 macbook air which is honestly not the best computer for what I would like to do.
 
Extra: I already have bought an  NZXT S340 Elite and Seagate Barracuda 2tb HDD

Its in production queue. Coming soon (tm),

no.

According to a post on tomshardware these mobos support optical cables:
Asus ROG Strix B350F Gaming (Uses FX S1220A Audio Codec)
Gigabyte AB350 Gaming 3 (Uses Realtek ALC1220 Audio Codec)
MSI B350 Gaming Pro Carbon (Uses Realtek ALC1220 Audio Codec)
MSI B350M Mortar (Uses Realtek ALC892 Audio Codec)
MSI B350M Mortar Arctic (Uses Realtek ALC892 Audio Codec)
 
I would go with the Asus B350-F. You cannot go wrong with it. 

You can upscale the 1440p to 4k but sometimes it can be blurry

Remember to apply the changes.

I think it's schools computer and it's schools issue. Let them sort it out rather than mess with their hardware.

Okay 1 minute is not normal haha. 
My PC does that for less than a second. 
 
You could try to reset CMOS if they allow you to do that...

@Eibe @Tauwer he's from Melbourne so use Aussie PCPP
 
@Tauwer Thermaltake TR2 PSUs are known for blowing up so that's a bad attempt at being cheap.
 
@Spud11 You might want to check what's dying in your PC first. Fixing that could be cheaper.

As said previously, I would wait for AMD Ryzen APUs. You want to get a Ryzen 3 2200G. 
 
If you want to build right now you could go with this, but it is not going to be as much value for money as the AMD build. 
PCPartPicker part list / Price breakdown by merchant
CPU: Intel - Pentium G4560 3.5GHz Dual-Core Processor  ($72.89 @ OutletPC) 
Motherboard: Gigabyte - GA-B250M-DS3H Micro ATX LGA1151 Motherboard  ($49.99 @ Amazon) 
Memory: Kingston - ValueRAM 8GB (1 x 8GB) DDR4-2133 Memory  ($64.00 @ Newegg Marketplace) 
Storage: Western Digital - Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive  ($46.55 @ OutletPC) 
Case: Rosewill - FBM-X1 MicroATX Mini Tower Case  ($26.99 @ Amazon) 
Power Supply: Corsair - CX (2017) 450W 80+ Bronze Certified ATX Power Supply  ($28.98 @ Newegg) 
Total: $289.40
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-01-25 05:17 EST-0500

https://pcpartpicker.com/list/WrjNLD something like this add in another 130 for the apu and that`s a nice build for your needs. You can always add another 1tb hdd for mass storage if needed ($50)

wait till the AMD apu`s come out those might be just what you need, you could get a build with such a cpu for 400 easy

Considering they're recommending a 1080 Ti, I'm going to wager it's going to need more than 8GB of VRAM.

Always good to check the official website first, but:
Minimum(720p): AMD Radeon™ R9 280
Recommended(1080p): Radeon™ RX 480
(No Radeon Recomdation for 4k HDR??)
 
Source: https://www.finalfantasyxv.com/en/windows-edition

1. What will you do with it? application name preferred
 
2. Budget?
 
There are cheaper new stuff with same performance, so you are overspending already even if your work makes sense to use a 10-core workstation