Really weird problem with N80

Hi guys, I have an issue with my N80 right now. The screen keeps blinking in and out. It goes white, and then goes back to working. Nothing application wise and phone wise is lost, however, it is getting quite annoying. It happened when I was using the net on my phone yesterday. I believe my screen might be going out. I already replaced it once. Someone help if they can. I've already set it back to default settings and that still didn't work.