you can now unscrew the blue tip from the chip casing.

this tip holds 3 parts. a rubber stopper, spring and a metal rod/pin.

This is also the part where you can see what you need to fix.

If it is the wires, take the soldering iron and reattach them. (I have no pictures for this)

or the metal pin broke (as in the picture), in with case you need to clue