Got a laptop with a dead screen, we've replaced the screen only to find that it must be something else on the laptop which has died...

I've connected it to an external monitor and this works ok, i want to replace the ribbon cable and the small controller board bit at the bottom edge of the monitor (im sure you all know what i mean by that) but i'm unsure where we would get such a thing and as to wether they are unique to particular brands etc

The laptop in question is a novatech L55110 and power rating is 20v 3.25a (in case that matters to the screen or screens controller board piece)