Where is the backlight coil on the logic board?

Hi.

well I'm back again, the backlight on my macbook air doesn't work, i've just bought the LCD assembly for it to replace the old broken one, however after fitting it,the backlight doesn't work. i've got the option of sending it back to the seller but he is in the US, and I'm in the UK. So I' just trying to check everything else before i send it back, so the question is, where is the coil for the backlight on the logic board for the macbook air 13" mid '09 model? a picture would be great if you could fine one, i have searched google for it and can't find one, so if anyone else can that would be great

thanks