My keyboard is double typing

[A PC SEMI-PRO]

I have a razer blackwidow tournament edition keyboard, for a little over 2 years now, which has a very annoying issue to it, the B key is double typing very frequently. I have looked up many solutions online and none seem to work for me, these include changing the settings in control panel for the keyboard to increase repeat delay etc.
I am not sure what I need to do as in fall fairness, despite Razer's horrible reputation, this keyboard has served me well for the past 2 years and I would rather not buy a new mechanical keyboard. Any help is appreciated, thanks in advance!

 

[Rdslw]

it its just single letter not whole keyboard its mechanical, you might want to replace button.
if its whole keyboard, it might be second dongle if its wireless and you have wireless razor mouse, you might receive same click from both dongles.

 

[A PC SEMI-PRO]

it its just single letter not whole keyboard its mechanical, you might want to replace button.
if its whole keyboard, it might be second dongle if its wireless and you have wireless razor mouse, you might receive same click from both dongles.

It is a wired keyboard and I can not replace the keyswitch as it is soddered onto the motherboard.