Symptoms
- Scraping or grinding sound as the plate rotates
- Turntable still completes rotation despite the noise
- Noise may be constant or only in certain spots of rotation
- No issue with heating itself
Likely causes
- CommonDebris caught between the turntable and roller guideFood particles under the glass plate create friction and noise.
- CommonRoller guide wheels not seated correctly in their trackMisalignment causes uneven contact and grinding sounds.
- PossibleCracked or chipped turntable edge catching on somethingPhysical damage to the glass plate can cause it to catch during rotation.
- Less commonWorn roller guide wheelsThe small wheels on the guide ring can wear down unevenly over years.
What to do
- Turn off and unplug the microwave, then remove the turntable and roller guide.
- Clean both pieces thoroughly along with the recessed floor area, removing all visible debris.
- Inspect the roller guide's wheels for even wear and confirm they spin freely.
- Check the turntable's edges for any chips or cracks that could catch on the guide ring.
- Reassemble, making sure the roller guide sits fully seated in its track before placing the turntable on top.
- If noise continues after thorough cleaning and inspection, replace the roller guide, which is an inexpensive part.
Tools and parts
- Soft brush
- Dish soap
Microwave roller guideSearch: “microwave turntable roller guide replacement”
When to call a pro
This is a simple DIY cleaning or parts swap and doesn't usually need a technician.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.