Iphone 4 will not work after replacing screen? Troubleshooting?

Iphone 4 will not work after replacing screen? Troubleshooting?

I replaced the iphone screen and it will no longer work properly. It is recognized by my pc and I have restored the firmware once already. The screen lights up a little bit ( a dark bluish hue). Any suggestions to fix this? thanks.

it is a very faint light up, but I can see from the inside that it is lighting up and from the outside it looks like a dark bluish hue.

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