The microwave may heat, but the tray stays still, moves unevenly, or slips under load. This symptom can have more than one cause, so the full model number and operating behaviour matter.
Common causes
- The glass tray is not seated correctly on the coupler
- The roller guide is dirty, damaged, or out of position
- The drive coupler is worn or cracked
- The turntable motor, wiring, or control output has failed
These are diagnostic possibilities, not a parts list. The same symptom can be produced by a mechanical problem, a loose connection, or an electronic fault.
How the problem is diagnosed
A technician inspects the tray, roller guide, coupler, and turntable setting before testing the motor circuit. The motor is checked for correct supply and mechanical resistance so a failed motor is not confused with a control or wiring problem.
The findings should be explained before any repair begins. Appliance Repair Pro provides an upfront repair estimate, and no repair proceeds until you approve it.
Information to prepare before the visit
Confirm whether the turntable setting is enabled, whether the tray turns freely by hand when the unit is off, and whether clicking or grinding is heard. A short video can also help when the symptom is intermittent, provided it can be recorded without operating an unsafe appliance.
Repair or replace?
The decision depends on the failed part, model age, parts availability, installation type, and the condition of the cavity, door, and controls. Built-in and over-the-range models may justify repair when the cabinet and door are sound; severe cavity or door damage can change that decision. A diagnosis allows you to compare the repair estimate with replacement and installation costs.
