Some signs that the carousel in a Sharp microwave is in need of repair include the carousel not turning or working as intended, most likely due to a broken turntable motor, a misalignment of the plate, a worn drive bushing where the carousel sits or issues with the turntable guide being improperly aligned or dirty. Troubleshooting easy-to-fix issues on the Sharp website's frequently asked questions link may help to resolve issues where a repair is unnecessary.
If a repair is needed on the carousel of a Sharp microwave, warranty information and costs can be found online. Often, repair costs of products that do not qualify for a warranty repair can exceed the cost of purchasing a brand new appliance. Repair of any electrical appliance should be performed by a knowledgeable appliance technician.