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Hello, I’m going to make a transplant of all ICs from broken board to a new without any IC but i have questions about this to help me to make this is the questions: What the good temperature and air speed good to soldering in a new board and remove the components from the broken board ? I need reball all ICs or i can only soldering on a new board (The new board has balls to soldering on ICs socket) ? I can use the liquid flux to soldering or i need to use the paste flux ? To clean the board i can use the Isopropyl Alcohol? Really very thanks by your help!
I would use amtech flux and not liquid flux, that runs off too easily. For cleaning the board isopropyl alcohol is a good idea. Preferably above 95%. You would need to reball all ICS to ensure they contact the board correctly. But I don’t see the worth in doing this to get a working logic board.
