I have a 2016 Thor Windsport Model 35C. The external 32 inch TV is a Seiki which I need to replace. What is the correct (and easy) method to remove this TV? Is it held in place by magnets or is it bolted to a frame that is attached to the RV? Also, what is a good TV brand (with digital tuner and for RVs) that I can install to replace the Seiki? Thanks for the help !