I have an Asus UX303LN laptop A couple of months ago, I spilled juice on a few keys of the keyboard(up, down, and left arrow keys). After that, they did work for a short time, but now they are not working. Should I have to replace the entire keyboard because these keys not working? I checked there are two versions of the keyboard, one is with no backlight and one with backlight. Which one should I order? Is the backlighting separate from the keyboard ?. In my case the backlighting is working fine.