As of 2015, contact Dynex tech support by phone at 800-305-2204, by mail at 7601 Penn Avenue South, Richfield, MN 55423-3645 and by email using the online contact form on its website, DynexProducts.com. Business hours are from 8 a.m. to 9 p.m. Central Time, seven days a week.
Access the online contact form on DynexProducts.com by clicking Contact Us at the top of the home page. The next page prompts to select a topic, enter a first and last name, an email address, a model number and a product description. The page also displays contact information for customers in Mexico and China and a frequently asked questions link.