"Screen moving up and down randomly...shaking?"에 답변i had the same probleme with my phone and i do this https://www.youtube.com/watch?v=Af5DvIZw... it work for screen too, it's the same cable. i even try to change the daughter board but this look like a motherboard connecteur problem.
"My Nexus 5 has black screen. What should I replace?"에 답변Screen black but phone works
"Screen black but phone works"에 답변I haved the same probleme it's come because the connection between the mother board and the usb wire was baddly plug i have to maintain the connections and restart my phone (hold second the power button) if this solved the problem you can add a lot duct tap to make pressure between the connections and the duct tape. Bye sry for my english