Chosen Solution
Hi, i broke my screen and decided to replace it my self using the guide on this website, i done everything correctly and decided to test before snapping the screen shut and to my enjoyment it worked. When i shut the screen in place the phone would not turn on or charge so i proceeded to lift it back off and as soon as i did the screen came back on. I have tried several times to close it again but same thing keeps happening, please can anyone help, also ive noticed that the screen isint exactly flush when i close it but dont want to push too much as im afraid ill do more damage than good and it will probably do the same thing.
You probably have something shorting when you close the assembly. I would check the display flex, there are three contacts that should be covered by tape but on some replacement screens, this tape is missing. Take a look at this picture (Step 14). Right next to the top-left corer of the bracket, there is a black tape covering three contacts. If the contacts are exposed, then cover it up with tape and try again.
Do you have any frame damage that is causing the screen to not sit flush when pressed down? It sounds like you have a possible grounding issue, but I’ve also seen faulty LCD’s cause this. They would work fine during testing, but when the cables for the LCD and digitizer were bent they would black out. I would do as Cameron suggested. Test your old screen. If it works, try another replacement screen to see if the one you got is faulty.
Check all the flex cables and make sure the battery is connected. After you tried that let me know if you see a backlight in the lcd.
