BlackWidow Chroma Problem

2 weeks ago I accidentally spilled a little bit of coffe on my Razer BlackWidow Chroma Keyboard. I tried getting all the moisture out from the keyboard and I also let it dry for more than a week. Unfortunally the day after i tried plugging in the keyboard but I couldnt type on it. The lights are working perfectly fine even though it glitches when I have synapse open. I know the keyboard is not spill proof but it bugs me cause I've spent a lot of money on it and I did not spill much. Is there anything I can do with this keyboard now? My warranty is out and I don't have the recipt of purchase. Please anyone help me :(