Dremel 4000 repair...

I think some of you people out there have one of these.Mine crapped out on me and I am trying to repair it.I always repaired my old dremels but this one is a little different.It just plain won't go.

The on/off switch in the circle appears to be the problem...

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Checked the two pins/solder points for continuity.Open and close the switch and no change.Could be this switch is the problem......

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Brushes are fine,look real good

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Any one have this problem ,were you able to get parts or did you have to find a repair depot? Do you any of you Winnipeg people know where a repair depot is?