Screen on Toshiba M35x S149 Laptop blank/flickers

Question

I am trying to diagnose whether I need a new screen or just a new flow inverter for my screen problems. Is there a simple way to tell which one it could be? The screen initially went dark although I could still adjust the brightness and notice the change in brightness on the dark blank screen. Occasionally I can see the image but it jumps all around. When I first wake it from hibernation I can clearly see the mouse pointer and move it throughout the whole screen before it goes dark/blank/jumping image.Any help is greatly appreciated.Thanks