Usual source of leaks on smartdrive machines are nearly always the inlet hoses or the drain hose has a small pin hole in it. If you are sure it is neither of them then all you can do is start from where the water first appears & follow it back until you find the source of the leak. This may include emptying the machine & tip it back against wall so you can look underneath for any signs of water.
Lincoln Appliance NZ, December 2009
