iPhone 6s doesn't turn on after a charging port replacement

I bought this iPhone with a non working screen, the battery was at 50%, i got the screen replaced and it worked, until it i had to charge it, since i didn’t have any original chargers i bought one but when plugged in, the screen showed the time to plug it in image. So i bought two more chargers but it resulted in the same thing, so i bought an original charging port from a locked phone, my iPhone is model A1688, and the charging port was coming from a A1633. So after i got the charging port replaced, when i press the power button it doesn’t show anything anymore. Please help.