Controller unresponsive/color light bar malfunctioin, what part to replace? Please help!

So a few days ago I spilled a very small amount of water onto the controller and it fell to the floor in a poor attempt to save it lol. Anyway, when I picked it up my PC (Which i use it on, and only PC) was still on and the light bar color turned red almost bleeding the color. Then it worked fine and it was late went to bed

Now after not playing games for awhile my PC no longer recognizes it. And the PS4 controller, although still turning on when plugged in via USB it is unresponsive and the only thing that it really does is softly breathe a GREEN LIGHT on the light bar, as if it was charging color malfunction code. However it is no longer bleeding in color and has returned to normal.

Is it the battery?

The lightbar senser/chip?

Or the main mobo of the controller?

Some parts look cheaper than others and the controller looks like an easy DIY. Please any advice would be appreciated.