Hi I have the same machine, and like yours found that it was leaking, although mine was clean water.
It is worth checking all of the screws that hold the base plate onto the lower water tank, as on my machine I found that the previous owner had replaced one of the screws which had ruptured the holding tank. (used a longer screw)
The remedy was simple, and fixed easily with the use of a rubber grommit..........it could be the pump, and a call to truvox international is high recommended as I found them very helpfull.
just food for thought
Regards
Paul