Ok heres my update

I replaced the cable to the lcd and isight and I still don't get a picture only a white screen... This is proving to be pretty expensive, but the only thing is the next step can be either the logic board or the whole screen including isight and Mic.. I just don't know which to buy... Buying both would be equivalent to another macbook air so I wont do that, but would love to get away with just the screen or the logic board... What would it be that makes it to where I check in the system profiler and it doesn't even show anything plugged in, and also does not register the isight in the profiler.. ?