Heating circuit
The high-voltage system powers the magnetron that produces microwave energy for heating food.
MICROWAVE OVEN CARE
Safe, precise service for heating and control faults.
Microwave ovens contain high-voltage parts that require trained handling. We diagnose the symptom methodically while protecting the appliance and your home.
MICROWAVE SYSTEMS
Heating, airflow and safety work as one system
Solo, grill and convection ovens combine high-voltage heating with mechanical and electronic controls.
Door interlocks
Multiple safety switches confirm the door is fully closed before the heating circuit can operate.
Turntable drive
The motor, coupler and roller ring rotate food for more even heating.
Cooling airflow
A cooling fan protects electrical components and moves warm air through the cabinet vents.
Convection system
Convection models use a heater and fan to circulate hot air for baking and roasting.
Electronic control
The keypad, display and PCB coordinate time, power level, sensors, relays and cooking modes.
COMMON PROBLEMS
What we check during microwave service
- Runs but does not heat: heating circuit, protection devices and control switching.
- Will not start: door latches, interlock switches, fuse, supply and keypad.
- Turntable not moving: coupler, roller support and drive motor.
- Display or keypad fault: membrane keypad, display connection and control board.
- Noise or burning smell: fan, motor, arcing evidence and internal contamination.
Important: A microwave can retain dangerous high voltage even when unplugged. Do not remove its outer cover yourself.
Book microwave diagnosis →