So i replaced my flex cable with the back and home buttons on it. I had to dissambled my s3 (motherboard, etc). When I put it back together and turned it on the screen is black. It makes the sounds like it turns on and I can swipe the screen and it makes the swipe sound... there is just no display... any ideas? I checked the screen plug on the main motherboard and it seeems to be plugged in snug. Please help!!!
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