Common Causes of Microwave Noises

• Turntable Issues: The rotating plate might be misaligned or have damaged wheels
• Roller Guide Problems: The support ring under the turntable could be worn out or damaged
• Fan Motor Malfunction: The cooling fan might be failing or have debris stuck in it
• Door Misalignment: The door may not be closing properly or have damaged hinges
• Magnetron Problems: The main component that generates microwaves could be failing

Types of Noises and Their Meanings

Different sounds can indicate various problems:

• Buzzing: Normal operating sound, but loud buzzing might indicate electrical issues
• Grinding: Usually related to turntable or roller guide problems
• Clicking: Could be normal timer sounds or faulty control panel
• Humming: Normal during operation, but excessive humming might signal magnetron issues
• Rattling: Often indicates loose parts or turntable misalignment

Troubleshooting Steps

1. Inspect the turntable and roller guide for visible damage
2. Clean the interior thoroughly, removing any food debris
3. Check the door alignment and hinges
4. Listen carefully to identify the type and location of the noise
5. Test with and without the turntable to isolate the issue

When to Call a Professional

Contact a qualified repair technician if:

• The noise persists after basic troubleshooting
• You notice electrical issues or burning smells
• The microwave's performance has decreased
• The appliance is more than 10 years old

⚠️ Never operate a microwave that makes unusual noises without identifying the cause. Unplug the appliance if you notice burning smells or electrical issues.

Remember: Regular maintenance and cleaning can prevent many common noise issues.