My phone fell and the display stopped working.

I fixed it it was a loose connector i just pressed onto the back of the phone, for others looking for solutions above the samsung logo on the back is where to press. Actually it worked once then did the same blacking out process, and now after massaging the back of the phone its working normally so probably was a loose connector, because if it was broken it wouldnt turn on at all. Also its an amoled display not an lcd. Thanks though.