washer tripping MCB?

My washer has buggered this morning..I came down and it was full of water and the MCB switch was down.Now this fuse switch is for the washer and fridge/freezer.. (which was off too)....the washer plugs into a socket behind the washer, then there is a cable from this to a fused switch above worksurface height. I changed the fuse in the fused switch, the fridge/freezer came back on, but as soon as i let power to the washer, there was a popping noise from the washer and the fuse on the MCB went off. I turned of all power to the washer, reset the main MCB fuse, the FF came back on...so i have identified the problem to being the washer!!!.....so what i need to know is..could the fuse in the actual plug from the washer have "gone"...or would that not make a difference???