These types of issues are rare.
Apple's refurbished products are treated as new with all of the same available warranty options.
Apple in Cupertino does all repairs on refurbished iPads and undergoes very strict quality control.
Read this here.
https://www.apple.com/shop/browse/home/specialdeals/refurbfaq_popup
You should strongly consider purchasing two-year extended AppleCare+ now or within 60 days of your initial purchase.