Phone wont turn on.

Phone wont turn on.

Im trying to repair my own phone because of the housing is damaged and the screen too. While im tearing down my phone i forgot to remove the battery cable and accidentally hold my power button so for a few minutes my phone is on while im tearing down every part to move it to new housing. I realized it after seeing my home button has a white led so i quickly remove the batter cable. But after i moved it to new housing my phone wont turn on anymore.