So you suggest lower temperature and longer time of soldering with preheating of large area of mobo?
Something like this. Note that longer time of soldering isn't useful for chips too. Try to find "IPC/JEDEC J-STD-020C" standard. It claims what temperatures and what times are peak for soldering process...
Jega
Something like this. Note that longer time of soldering isn't useful for chips too. Try to find "IPC/JEDEC J-STD-020C" standard. It claims what temperatures and what times are peak for soldering process...