Samsung Microwave SMH7178STD Troubleshooting and Repair Help

We’ve put together a list of symptoms for Samsung Microwave model SMH7178STD below. The top three symptoms for SMH7178STD are "Won't start", "Door won't close", 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 SMH7178STD Samsung Microwave.