I need a repairman in central wisconsin to look at my magestic filter queen?

I have a Magestic Filter Queen vacuum that is over 25 years old & looks in nice shape. I haven't used it in over 15 years because I have a central vac in our home & the filter queen was not working properly. Who can I get to look at/repair near my home in Rib Lake, WI? Is there a service store in Wausau or Marshfield? Thank you.