The video the guy give the correct answers about the repair but he way he suggest fixing it is terrible. Use a heat gun and flat solid object like a knife. Use one hand to apply pressure to the ribbon cable with the back edge of the knife. Use a butter knife nothing sharp. Use a pot holder to hold the knife so you don't get burned. Use your other hand to apply gentle heat for about 2 minutes. Allow to cool. If you still don't get a picture then you will have to use more intense heat. I have fixed them this way you should be able to as well.