MacBook Air 13" 1466 Lcd Backlight issue

Hi there,

i have i big problem. I let fall a bottle af tea over my macbook air 13" mid 2012.. After them the MBA goes dark.. Everything working well but the display is dark. I can see under bright light the whole screen.. I can use the mouse, trackpad, WIFI, Bluetooth and i can se ma screen but everything is very dark...

If i connect it to a external monitor everything working well so that the grafic card cant be damaged.

I think its the inverter Board or inverter converter on the logic board or something like this. I think the LCD have no problem.. Where is the location of inverter board on MBA 1466? is this integrated on the LCD Panel so that i replace the comlete LCD panel or is this like the MB pro 2010 only a inverter board that can be replaced with new one. I try to find inverter for MBA 2012 but i din't find this part anywhere...

Can someone help me the locate the problem or some reasons that can be initiate the problem and finally how can i fix it...

i find this : Linear Technology LT3957 inverting converter

for one possible reason..

But where is the inverter board on this mba...

Which other causes can be initiate this failure?

thank you for a little inspiration to find the right way.