I dunno if Atma-Sphere does any repair work on amps that aren't their own, but if you don't get any answers here, it may be worth giving them a call. Maybe they can recommend someone.
Amplifier Repair in Minneapolis/St. Paul ?
My Classe CAM-200 have always been cool to warm, but recently the heat sinks become very hot to touch and make burning smell. I wonder if there is a reliable local repair shops within the Twin Cities Minneapolis/St Paul that I should bring in for a check up and repair. Shipping to Classe for these heavy mono amp can be too expensive.