Advanced Logic Board Diagnostics: How to Track Down a Shorted Power Rail on a MacBook Motherboard (opens in new tab)

Every hardware technician or system engineer eventually faces the ultimate villain: a completely dead laptop that draws zero amps, or worse, triggers the bench power supply's over-current protection (ocp) instantly. While software troubleshooting gets a lot of love, component-level hardware repair is a true art. Today, we’re going deep into the trenches of micro-soldering and motherboard diagnostics to map out exactly how to find a shorted capacitor or a blown PMU IC on a modern laptop logic ...