Microwave produces uneven heating; some areas of food are boiling while others remain cold.

User-level checks:

• Verify that the turntable and roller ring are correctly installed and rotating.
• Use round, microwave-safe dishes and avoid stacking containers.
• Stir or rotate food midway through cooking, especially for dense items.
• Do not block the waveguide area with large dishes.

Next steps:

• If the turntable works but heating is still very uneven, the internal stirrer system (if present) may be faulty and requires technician service.