In MacBook board repair, one chip controls almost everything before the system even starts: The SMC. SMC stands for: System Management Controller This is one of the most important ICs on the board. Without a working SMC: For technicians, understanding SMC is essential. Especially for diagnosing: What is SMC? The SMC is a dedicated microcontroller. Its job is hardware management. Unlike the CPU: the SMC works independently. It stays active even when the MacBook is off. That’s important. This allows:…