How to Replace a Cracked or Damaged Microwave Turntable

Microwave turntables crack from thermal shock, impact, or just age. A damaged one leaves your food sitting still while the heat concentrates in one spot—uneven cooking and the occasional spark if ceramic debris touches the heating element. The good news is this is the easiest microwave repair you'll make. The turntable assembly sits on a simple roller bearing that takes minutes to access. You don't need a technician or special skills. What you do need is the right replacement part for your exact model and five minutes of attention. A working turntable transforms your microwave from a hot spot to a proper appliance again. Before you start, know that turntables are model-specific. A replacement for a Samsung won't fit a GE. The part number is printed on the microwave's nameplate—usually on the side or back—or you can search your model online. Once you have the right part in hand, this job is literally just removal and installation.

1. Unplug the microwave. Pull the plug from the wall outlet. Do not skip this step. Even though you're working on a low-voltage part, it's the safest habit and protects against accidental activation.
2. Open the microwave door and remove the glass turntable. Swing open the door. You'll see the turntable resting on a plastic or metal roller assembly in the center of the cavity. Lift the turntable straight up and out—it sits loosely and will come free without resistance.
3. Inspect and identify the turntable roller assembly. Look at the center post now exposed in the microwave cavity. Most models have a circular roller assembly—either a three-pronged plastic spider or a round wheel on a metal post. This is what the turntable rests on. Make a mental note of how it sits, but don't remove it unless it's visibly broken or your replacement instructions say to do so.
4. Place the new turntable on the roller assembly. Take the replacement turntable from its packaging. Orient the center hole so it aligns with the roller post. Lower the turntable straight down onto the post, letting the center hole slide over the roller assembly. You should feel a gentle click or snap as it seats into place.
5. Test the turntable rotation. Plug the microwave back in. Run it on high power for 30 seconds with the door closed (no food inside). Listen and watch through the window—the turntable should spin smoothly and steadily. Stop the microwave and check that the plate hasn't shifted or tilted.
6. Clean the cavity and test with food. Wipe down the inside of the microwave with a damp cloth to remove any glass fragments or dust from the old turntable. Once dry, place a mug of water or leftover food in the center and run the microwave for 60 seconds. The turntable should rotate continuously without stopping or sticking.