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Razer GreenSwich issue in BlackWidow keyboard

Recently, I got a used Razer BLACKWIDOW Ultimate 2014 mechanical keyboard with the fancy Razer greenswitches inside. The keyboard looks awesome and I really like the illuminated keys too. I'm not a person who likes the lound, clicking sounds that this switches are make when you press them down but I decided to give it a try. Sadly, the smile in my face went away as soon as I plugged the keyboard in and started typing on it. Every second or third character was doubled or missed on the screen of my computer. Something was wrong for sure with the keys, this issue is called scattering by the way. Actually I know that before I bought the keyboard and this is why I was bought it. There was nothing left, time to investigate the source of this issue.

After a few phillips head screws I got inside the keyboard, and I desoldered some of the failed switches.
The switch itself was easily disassemblable, 2 securing on each side. The problem was obvious after I looked inside the switch, corroded contacts, simple and deadly.

Some polishing fixed the conductor surface but the question was how long the switch can work before failing again. I don't understand why the surface aren't covered with some kind of anti corrosion layers or any other method for countering this problem. The fact may sounds good like that the fix is not a big deal, but think about it. I have to desolder, disassemble, clean, reassemble and soldering back every single switch in the keyboard.













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