When a solid-state drive suffers severe physical damage, an electrical short, or excessive thermal degradation, the SSD controller can become partially detached or suffer internal failure. Because the controller is responsible for managing the entire file structure, a malfunctioning controller leaves the drive completely unresponsive. Inside our certified Class 100 ISO 5 clean room, engineers execute high-precision Ball Grid Array (BGA) reballing and controller swapping to restore the drive's primary data pathways.
The controller chip is joined to the printed circuit board (PCB) by an array of hundreds of microscopic solder balls. Technicians utilize specialized infrared rework stations to apply highly localized, programmed thermal profiles. This liquefies the damaged solder connections without warping the multi-layered PCB or overheating the neighboring NAND flash chips. Once removed, the controller is either replaced with an identical donor chip or "reballed"—a process where fresh, microscopic solder spheres are meticulously aligned and fused to the chip contacts. This restores the vital electrical connection required for the host computer to communicate with the drive again.
