Volume up button doesn't work.

I got a new cat recently who required some training, and unfortunately, I think she urinated on my switch. The only issue I've noticed since cleaning it is that the volume up button no longer works. The volume down button works, the power button works, everything else seems fine, I just can't turn the volume up, and there's no setting in the Switch itself to adjust volume either. I have not yet tried anything to fix it because I'm quite inexperienced working on electronics myself, but if there is a way to fix it myself, I'll certainly try. The button does not appear to be stuck; it presses down and up normally, but it just doesn't do anything.