Carefully remove the inside from the shell.

Be careful not to touch any of the capacitor leads, or you may receive an electric shock.

If the inside sticks to one half of the shell, it's probably due to (a) glue around the edge of the A/C connector, and/or (b) foam glue between the inside and the flat of the shell.

Use a heavy duty spudger or other pry tool to pry the edge of the A/C connector from the shell, and carefully pry between the shell and the inside to break the foam glue.

Use only ESD-safe pry tools. Do not use metal pry tools or screwdrivers.

You may find the metallic sheeting breaks a little; that's okay, but try to minimize the damage!