Remove the glass turntable, then the roller ring. Then seta glas of water in the unit and turn it on for 5 to 10 seconds. Look through the door window and see if the drive hub is rotating. If it is, then check the underside of the glass table to match up the drive hub. If it isn't turming, the drive, then it is internal and should have a 1 yr warrantee minimum. Remember, the, the turntable and drive must engage each other and the roller ring in place. Good Luck, and let me know please. One more thing, make sure there isn't a Turntable on/off swirch set in the off position. Good Luck, Ne
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