Hi there.
I have such item here :
https://ae01.alicdn.com/kf/HTB1cxPO...ouch-Screen-Separator-Machine.jpg_640x640.jpg

I have one not working Samsung /old/ and want to try reheat the board to eventually fix the solders.
What Celsius to use and for how much time? should i "bake" from the both sides?

nice week.

 

Preheat temp 150C for 60 seconds.

Reflow temp 225C for 20 seconds..


https://www.compuphase.com/electronics/reflowsolderprofiles.htm