water damge

Hi, I spilled water on my Lenovo Ideapad S145 15AST and dried it. It now work well except that the screen in dim. What could be the problem? How can I fix it?

So I spilled a little peach juice on my Lenovo U310 a while back. It actually wasn't a lot because I had a juice box and I thought it was empty so I squeezed it lightly and there magically came like 5-10 droplets of peach juice that fell on my laptop keyboard and screen. I don't remember when...