Why is my screen white?

Why is my screen white?

I have some broken cameras at my house, and I bought some parts online to fix them. I received the parts some time ago, but when I replaced the screen for the WX80 and turned it back on, the screen would turn white, but the buttons would still work. I can't remember if the lens would extend or not, though. What is wrong with the camera? Is something wrong with the screen, or is it the main board itself, or is it something else?