Hi. My friend is not on the i/net so I`ll explain. She has this LG model as above that won`t spin. The machine pumps out alright but just doesn`t spin though the drum goes all jerky even if it does move. I had a look and the drum bearings are fine and I read somewhere on another site that the part that might be broken is called a hall sensor. Does this sound like the part we need to fix the machine? Thanks.