k70 rgb LEDs showing wrong colours and buzzing when LEDs are off

So over the past few months my K70 RGBs lighting has been acting up. Sometimes red shows as orange, but currently some are green. Some lights are also lit even when set to black, whilst others will not light up at all. The keyboard also emits a buzzing sound when the lights are off.

I have currently tried:

- Soft reset

- Hard reset

- Force update

- Creating a new profile

- Reinstalling iCUE

I have already created a support ticket, but since my keyboard is out of warranty, Corsair are unable to help me any further.

Does anyone know if there is another fix or is my keyboard finally on its way out?