Haha -- you and my husband both -- he just brought one back 2 weeks ago, a Breville Duo-Temp 800. We had to buy a new transformer for ours, we had one for up to 500 watts, had to buy a new one for up to 1000 watts -- it cost 500 pesos -- yours must be even larger than ours I guess. When you say converter what do you mean -- do you mean the big lead box that weighs a tonne? I'm assuming so. In that case, what do you mean motor runs but device won't work properly? Which model do you have? Did you check it in the States before coming back that it was all working properly? Ours already is only dripping on one of the filters while flowing strong on the other... we've got to try cleaning the filter tonight -- not sure if it's blocked with coffee, or if it's possible that already with a couple of weeks of use it needs de-calcifying.
Tell me your model and what exactly is going on and I'll ask my husband Sr Ingeniero what he thinks when he gets home this evening.