5' iPad Pro, iPhone 8, iPhone 11, iPhone 12 Mini, Numerous iPods, Big Sur SMC RESET. We follow the rail back to find that the SMC is not creating the rail necessary to turn on U7200. Macbook pro smc chip replacement cost According to repair site iFixit, which first highlighted the problem, 2016 and later MacBook Pro machines are using thin, fragile display flex cables that are prone to malfunctioning with repeated.