I replaced a broke screen on a iphone 4s and now it will not power up. When I plug the charging cord in it vibrates and then just dings repeatedly and the motherboard gets hot. This is the second screen I have put on this phone. The first screen I installed came on for a few seconds then turned white with horizontal lines. After talking to tech support where I ordered the screen they said it was a faulty screen so they sent me a new one and now it does this. I have tried to reboot by holding power and home buttons and nothing. I have replaced lots of screens on many different phones but never had this problem. Also this phone was not dropped but was actually slammed on the floor to originally shatter screen so I'm not sure if its not some other problem.
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