Hello, sometime ago keys on my CM Storm Quickfire TK stopped working correctyl. It's W, R, A keys. Probably from playing too much of CS:GO.. But anyway, I thought I might fix it somehow.
They sometimes register, sometimes don't and sometimes registers twice. I tried to use contact cleaner but no results. I used compress air to blow into the keycaps - no results either.
Today I opened up the keyboard to see if there is any corrosion on PCB. I see it's dirty (this keyboard has over 5 years). There are some corrosion signs but nothing special around the W/R/A keys.
Any suggestions what should I try? I don't have any alcohol to clean the PCB right now.
I have attached two photos.
