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smoking singer motor controller?

My wife has a Singer and, like previous questions, it has started to smoke. Removing the suppressor is your recommended fix, but which is it?
Opening the pedal, there are two small fuse-like units on the bottom right when viewed from above.
Which is the suppressor?
Dave C, July 2013
Should be a small square one you will soon see because the wires will be connected to the terminals

ken, July 2013
link Click here to see other fixes for Singer.