Laptop Board Repair Guide: Mastering BGA Rework
From reballing to alignment to reflow profiles, an engineer breaks down BGA rework parameters.
BGA rework is the watershed of laptop board repair: many can swap parts, few can rework BGA well. A senior engineer breaks down the key process.
Highlights include stencil selection and cleaning, magnifier alignment checklists, preheat and reflow profile settings, and post-rework inspection standards.
"Get the profile wrong and pads lift; get the airflow wrong and neighboring parts fly off." Trainees should practice at least fifty times on scrap boards. Related modules are taught at the Shanghai campus.
Highlights include stencil selection and cleaning, magnifier alignment checklists, preheat and reflow profile settings, and post-rework inspection standards.
"Get the profile wrong and pads lift; get the airflow wrong and neighboring parts fly off." Trainees should practice at least fifty times on scrap boards. Related modules are taught at the Shanghai campus.