Are you saying the switches initially do something (award points) but don't do something else (advance capture/blaster)? That would be very weird. More likely the switches aren't registering anything. Did it used to work then stopped working by itself? Or did it stop working after the game was opened up (for cleaning or another repair, etc.)?
Take the glass off and confirm the behavior using your fingers. If all 4 switches act weird initially and then work ok after a few games, then it's probably a wiring issue - try reseating the switch matrix wires on the PCB behind the back glass...