Razor Ornata Chroma: Inserting "n" after spacebar

My keyboard is inserting an extra character "n" after the spacebar. I have done already:
* Removed the spacebar, pressed the sensor directly with a pen, also gives an extra "n". So I guess the keys are not sticked together.
* Switched Chroma keyboard with an other computer. The issue switched with the keyboard. So I guess is it nog an issue with the computer software.

So it seems it is an issue with the keyboard hardware or firmware. Anybody a suggestion how to solve this?

Thanks in advance,
Guido.

btw, might be a known problem since I'm not the first with this issue: /razor-ornata-chroma-inserting-n-after-spacebar.21692/