343S00579 Power IC for MacBook Pro 14 A2779 (Early 2023)

The Early 2023 14-inch MacBook Pro uses Apple's M2 Pro or M2 Max chips, with a dense board around them. Power chips like this 440-pin one feed rails the processor needs, so a failure often shows up as a machine that won't start or stalls at a low current draw on the charger.

This listing sells the Apple 343S00579 power IC, a 440-pin BGA, for the MacBook Pro 14-inch A2779 from Early 2023. The listing title mentions M2 Max; it doesn't give a board position or say which rails the chip handles.

When it may be at fault

• No power-on with a known-good charger.

• Low, stuck current with missing rails.

• A short traced to this chip.

• Liquid damage around it.

Work methodically

On Apple silicon boards, shorts on small rails are common and usually come from capacitors. Clear those first, then measure the chip's inputs and outputs. Replacing a 440-pin BGA on this board needs a preheater, careful underfill removal and clean pads.

After fitting, check the rails and test boot, charging over USB-C and MagSafe, and the display before closing up. A short load test afterward confirms the rails stay steady.