If you tip it on its side and look up its skirt you may (should) see a rating plate - a sticky label with all the important details.
My mixer says 220 - 240 Volts 50/60Hz
Your American one very probably says 110 - 120 Volts.
Changing the plug on the end of the cable does not convert for supply voltage.
There is a strong chance that you've injected 230 Volts into a 115V machine and in doing so caused considerable harm. the burning smell will have been from the motor and the motor brushes.
Harts of Stur will sell you a 230V machine for about £400
Peccavi
July 2013
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