✅ Simple Outlet Tester I Use (Amazon paid link): br Disclosure: Some links above are affiliate links — which means I may earn a small commission if you click and buy, at no extra cost to you.br br Ninja Support: br Ninja Double Oven (DCT451) not turning on at all? This walkthrough shows how to confirm outlet power, wake the control panel from standby, avoid extension cords, isolate a bad circuit, and perform a safe power reset and when to contact support.