I was speaking to Adam today and asked the same thing.  He had a look at the South Park taps and said they were the same.  The SP is an Aussie delivered machine from memory.  The X Files machine had been working fine for some time until the other week when it cooked the first transformer.

Can problems on the secondary side of the transformer cause it to cook and if so, what sort of things?  My first thoughts were that there is an issue on the primary side of the transformer.  It is the bottom section of the transformer that is cooking.