zero ohm resistors is not a fuse, it is simply a jumper with negligible resistance. It was mainly to make it easy for pick and place machines to jumper 2 pads since they cannot work with wire for jumpers. Its also easier/cheaper than jumper pins and a jumper block where the design doesn't need to be switched/changed.
Well, if that is the case, then you have to think about "why did his fry/blow in this circuit"?
If not a fuse, then he will have another problem soon, eh?
