Samsung Microwave MS840BB Troubleshooting and Repair Help

We’ve put together a list of symptoms for Samsung Microwave model MS840BB below. The top three symptoms for MS840BB are "Noisy", "Tray won't turn", and "No heat". Click on your symptom to see what causes it and how to fix it. With step by step instructions, repair info, and how-to videos, you’ll see just how easy it is to fix your broken MS840BB Samsung Microwave.