I am using Nexus 5 for at least a year. Suddenly the screen went crazy and it started turning off and on again. I tried to turn it on, but it didn't work, the screen was black. After a while, I could turn it on, but the screen was displaying static noise like this (not my phone):
I had my phone with USB debug mode enabled and used this Java application to mirror my phone screen. There was no problem using my phone from my PC, but the screen still was static. The touchscreen is working, but I asked a tech guy and he suggested to change the display. I bought the part and replaced it myself, but it didn't work (same results).
Now I've been researching a little more and I found out that the problem could be the charging port mic flex connection to the display. Can someone answer me if they have faced this same issue before and how they fixed it?