Big problem with Galaxy Note 4

[GalaxyNote4]

Hi everybody, I'm new here and I have a question, it's really important.
My Galaxy Note 4 won't hold charge, so I decided to change the charger port.
I ordered a new charge port and replaced it in the phone.
But now my phone won't boot. If I put it in the charger, it vibrates every 10 seconds 2 times.
It's completely dead, no screen or anything, just the vibration.
I've opened the phone to check the connectors and everything is allright, but still this problem.

Can somebody help me please?

 

[Rowlette]

Battery is fully charged?

 

[GalaxyNote4]

Battery is fully charged?

Yes, I've put it 1 day in the charger

 

[TwitchyPuppy]

Did you replace the battery?

 

[GalaxyNote4]

Did you replace the battery?

Yes, I placed a new battery 3 months ago.