Blackwidow TE Chroma V2 Switch Repeats

Hello Everyone! I own a blackwidow TE Chroma V2 for almost 3 years. I use this keyboard a lot. I have a problem with this keyboard which sometimes some of keys repeats when I press them. Weird part is it's not permanent on some keys. for instance I have this problem for months on '6' key. but for instance if today my 'i' key repeats then after some days it gets fixed on it's own but 'a' starts to repeats itself. I've read through other posts and saw a video on razer support about what can cause this problem. Right now my keyboard is clean(under keys too) so it's not a dirt problem. I have tried it on other computers and I still have the same issue on Linux and Windows(I use Linux for my daily work so most of the time, I'm on my Linux. but I have openrazer installed). My questions are: - is it something else than switches or if I buy new switches and replace them I can fix it(at least for the permanent ones)? - can it be something else like electronic problem or keyboard board is damaged?