Ned M Bunkerville , NV July 23, 2018 Appliance: KitchenAid 5 Quart Stand Mixer KG25H7XWH4 Kitchenaid Mixer Kg25h7xwh4: The speed was slow then sped up and turned off. How to replace Speed Control Assembly. Super simple fix. The board plug in are in a little different location but were easily identified. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes