wow for some reason this apears to be a 220 volt unit is it? if it is then you probably need a new water valve in thie. this has two side one for the water in the door and the other for the ice maker, the water side is probably bad. you can puchase this at http://www.repairclinic.com/SSPartDetail.aspx?s=t-SGD521S-%3d%3dei140932&PartID=140932 for around $52.00. as far as paying more the only way i know of is if you leave a bonus, I'm not sure how that works on your end though so if you cant dont worry about it, thanks Bryan, P.S. if you want to see if its the valve its in the back I believe on the refrigerator and you can have someone press the water button and if you can feel it buzz but no water then it probably is the valve not opening to let the water thru.
the best way to find the valve is follow the water line from the house into refrigerator and where it connects is the valve, I sure hope someday I can visit Australia, always wanted to! best wishes and thanks, Bryan