Alright, so the issue is the following...
The computer came into the shop with no back light. With the lack of testing hardware that matched the laptop I attempted a few different screens and a few different inverters, with no luck.
I then proceeded to order an inverter. Once the inverter arrived I still had the same problem. No back light. But I could see the image on the screen. Externally it also works perfectly fine.
So I tried a few other screens with it. Still no joy. Some of the screen didn't display due to incompatibility. But a few others did display with no back light. I cannot take this as a bad screen just yet, hence why I am here.
Has anyone encountered same problem?
Any additional information let me know.