The tip of my power supply plug broke off inside the power receptacle.

Once the DC-in board has been removed.

Peal back the metal RFI shield.

At the back of the power receptacle - gently pull the top of the center tab out away from the receptacle body. Forming a gap.

From the front of the receptacle - use a screwdriver to push the broken tip out the gap.

Push the center tab back in place.

Replace the RFI shield.