When Your Microwave Runs But Does Not Heat

North Dallas Appliance Repair provides microwave repair for homes throughout Dallas, Texas.

When you heat food in your microwave in Richardson and it comes out cold after the timer finishes, the magnetron or high-voltage diode has likely failed. Built-in microwaves are common in North Dallas kitchens, and replacing the entire unit can be expensive and disruptive when a targeted repair would restore full function.

North Dallas Appliance Repair handles heating failures, door switch issues, and control panel problems in both built-in and countertop microwave units. Our technicians use proper safety protocols for high-voltage components, and we provide cost-effective repair solutions when replacement is not necessary.

If your microwave is not heating, the turntable is not spinning, or the control panel is unresponsive in Dallas, call North Dallas Appliance Repair at (972) 613-2500 to book microwave repair service.

Testing High-Voltage Parts and Restoring Heat Output

When we service your microwave in Dallas, we test the magnetron, high-voltage capacitor, and diode to determine which component has failed. We also inspect the door switches, control board, and turntable motor to verify that all safety and operational systems are working correctly.

After the repair, your microwave will heat food evenly and quickly, the turntable will rotate smoothly, and the control panel will respond to every button press. You will no longer hear loud buzzing or humming sounds, and the unit will stop tripping your circuit breaker during use.

We are familiar with built-in microwave installations common in North Dallas homes, and we handle both over-the-range and flush-mounted units. We do not modify cabinetry or relocate electrical outlets, but we do address all mechanical and electronic functions that affect microwave performance and safety.

What People Ask Before Scheduling Service

Before booking a repair, most homeowners want to know what is causing the heating failure, whether the repair is worth the cost, and how quickly their microwave can be fixed.

Black icon of a refrigerator, washing machine, and microwave.
What causes a microwave to stop heating?
Heating failures usually result from a burned-out magnetron, a failed high-voltage diode, or a faulty door switch that prevents the unit from powering on. We test each component and replace the parts that have stopped working.
Black and white graphic of household appliances: refrigerator, washing machine, and microwave.
How long does a microwave repair take?
Most microwave repairs in Richardson are completed within one to two hours, depending on the issue and the model. Replacing a door switch or turntable motor can often be finished during the first visit.
Black and white icon of a refrigerator, washing machine, and microwave.
Why does my microwave make loud humming noises?
Loud humming or buzzing usually means the magnetron or cooling fan is failing. We replace the defective component to restore quiet operation and prevent further damage to the internal electronics.
Black silhouettes of refrigerator, microwave, and washing machine.
When should I replace my microwave instead of repairing it?
You should consider replacement if the magnetron has failed on a countertop unit that is more than ten years old, or if the control board and door assembly both need replacement at the same time. For built-in units, repair is often more practical than replacement due to installation costs.
Black and white icon of a refrigerator, microwave, and washing machine.
Do you service built-in and over-the-range microwaves?

Yes, we repair both built-in and countertop microwave units throughout Dallas and surrounding areas. Our technicians are trained to safely handle high-voltage components in all microwave configurations commonly found in North Dallas homes.

Microwaves in Dallas homes are used multiple times each day, and a failure disrupts meal preparation and daily routines. If your microwave is not heating, making unusual noises, or showing error codes on the display, contact North Dallas Appliance Repair at (972) 613-2500 to schedule service and restore full function without the cost of a full replacement.