Game Boy DMG Button Pads - Conductive Contact Set

Having to mash the button to make it register?

Buttons that need a hard press, or only work at an angle, are almost never the buttons. It is the black conductive pad underneath - the carbon face wears through and stops bridging the contact.

Sold as a single set. No soldering: open the shell, lift the old pads out, drop these in. While you are in there, clean the board contacts with isopropyl - a worn pad and a dirty board usually arrive together.