The tools required are few, indeed I have performed
'major surgery' on PCs with nothing more than a pocket knife that
was equipped with a screwdriver blade. It is useful to have the
following tools available...
Phillips screwdriver No 2 size, conventional screwdriver with blade
6 mm wide, Wire cutters (scissors will suffice, they are not for
cutting wire, but for snipping plastic cable ties), a pair of tweezers
is useful for picking up screws that may be dropped while handling.
A few plastic cable ties may be useful for tidying up the wiring, but
electrical insulating tape or even sellotape can be pressed into
service. Be aware that if such adhesive tapes are used they may make
the wires sticky and this may make them difficult to rework if this is
required in the future.