Very dark screen almost black, replaced inverter already

My macbook pro, model A1175 screen stopped lighting up. I can look closely and see the desktop and everything is there, behind the dark screen, but it simply doesn't light up.

It works perfectly normal. I can even tell that it works normal without hooking it up to a monitor. The screen is dark, but if I look closely i can see my desktop and the mouse moving around. The problem is that the light doesn't light up to show the monitor the normal way. Like a light behind the monitor is burnt out or broken.

I already tried doing everything on the mac forum, and I replaced the inverter, problem still the same. I know I could replace the screen but I'm looking into something cheaper. I can't really afford to but a $200 screen.

Thanks in advance!