hi

i have a Apple MacBook 13.3" Retina A1425 2012 that just stopped displaying,

no machine start ok but i get no display

i suspect the backlight,

i have same problem with air late 2010, a1370 (mb 820-3024-b). does your laptop work properly with external display?
if you suspect backlight, you should see how lcd works without it - if you turn the lamp on it or put working screen on sunlight - you'll see it. does your apple logo (on the back of the screen) wokrs? 'couse mine - doesn't. (but webcam works good)
moreover, you could check backlight on your lcd connector on motherboard - last 2 or 3 pins (i don't remember from wich side) - are for the backlight. you should get schema of your motherboard to be shure.

Can U expand , and give more info. Is this have visible screen on the strong light ? Can U see something on the lcd?