Please help with ideas how to repair/replace Viking VIPR161ss fan speed control. this part sits on the right side of the Top Cover Assembly which is Viking Part# PS200006. that part is over $600, if available, so it doesn't make sense to purchase vs cost of entire new unit. I've inquired with some board repair places but have yet to find someone who can repair it and have yet to see any offered on ebay or craigslist. any ideas would be much appreciated. thank you.