Samsung SM-N930F screen replacement doesn't work

[OOF_TVYT]

Hello, I received and "fixed" an old SM-N930F. No, I am not joking. I replaced the screen, which meant taking out the board and placing it into the new midframe that already had some of the components.

Now, after turning it on, only the notification LED lit up, pulsing in blue, the phone vibrated a bit as it does, and nothing else happened. So far I've tried:

-Messaging Samsung about it, they told me to go to a walk-in repair store (there are none in my city)

-Going to a 3rd party repair shop (They looked around, poked around, checked all the connections, didn't find any problems)
-Messaging the person who sold me the replacement screen (I charged the battery for ~1h, disconnected the screen and battery from the board, then reconnected, same result)

Any help would be appreciated. Also please don't ask me why I have an SM-N930F.

[-Robot-]

We can not help you with this, we can only recommend that you take it to a authorised repair centre

[OOF_TVYT]

Trust me, I wish I could. The only one in my city was shut down, ironically, around the time when the s8 came out.

[Piper123]

Note 7 devices were recalled due to fire risk and from memory I think Samsung reduced the ability to charge the device.

If the OP takes it to Samsung, may not get it back 😂😂

[OOF_TVYT]

Bumping this a bit, but I've scheduled a small checkup at a 3rd-party service center for Monday. I'll see what they'll say. I doubt it's a board problem, but it could be.