Thank you Phil for your suggestion. I've been on the look-out for all sorts of potential sources of know-how, especially hobbyists, retirees, even instructors at appliance schools who might do work on the side. I'll add "signs of life" as you describe ham radio enthusiasts. The refrigerator is the only one I've been using every day for about 30 years now -- it's not just a "collectible" or conversation piece.... I'm far from letting it go out to pasture!