A Kenmore microwave turned on but did not heat (over-the-range unit).
What our technicians usually find: the magnetron, the high-voltage diode or capacitor, or a door switch.
A microwave that runs and spins but leaves the food cold has a problem on its high-voltage side. We repair over-the-range and built-in microwaves along the Mount Vernon corridor.
Appliance Surgeon offers same-day and next-day visits to Mount Vernon homes and buildings. The $75 diagnostic visit is credited to the repair, labor starts at $200 on about 9 in 10 repairs, and every repair carries a 90-day parts-and-labor warranty.
Schedule service in Mount Vernon
Same-day and next-day visits.
Open 7 days until 10 PM (Sundays from 10 AM)
Diagnostic visit: $75, or $115 for a double unit.
Credited toward your repair when you approve the quote.
90-day warranty on parts and labor, and a written quote before any work starts.
The over-the-range Kenmore from Huntington listed on this page is a typical no-heat case. When the light, fan and turntable all work but nothing heats, the fault is on the high-voltage side.
That side has a short list: the magnetron, the high-voltage diode, the capacitor, a high-voltage fuse and sometimes a door switch that only breaks that circuit. Each is tested with the power off and the capacitor discharged.
If the microwave buzzes loudly or gives off a hot electrical smell while it runs, stop using it. The same goes for one that trips the breaker or blows its fuse every time it starts, which points to a shorted part or a failed door switch; resetting it again and again won't help.
Please leave the cover on. The high-voltage capacitor can hold a dangerous charge long after the microwave is unplugged.
Over-the-range microwaves above gas ranges also collect grease from below. Clean the grease filters underneath now and then; they're part of the vent fan's airflow.
A Kenmore microwave turned on but did not heat (over-the-range unit).
What our technicians usually find: the magnetron, the high-voltage diode or capacitor, or a door switch.
Company data; customer details are kept private. “What our technicians usually find” is the common cause of that problem, confirmed by our team. The technician confirms the cause on site before quoting.
The checklist our technicians follow on every visit is on the Microwave Repair page.

Before you book in Mount Vernon, VA, these guides explain the most common symptoms, which checks are safe to try yourself, and when a technician should take over. All guides.
Refrigerators, freezers, washers, dryers, dishwashers, ovens, stoves, cooktops, microwaves, range hoods, wine coolers and HVAC systems, all in Mount Vernon, VA; pick the one you need.
We also provide microwave repair in Springfield, VA, microwave repair in Alexandria, VA, microwave repair in Lorton, VA, microwave repair in Oxon Hill, MD and microwave repair in Colchester, VA.
This location is part of our microwave repair coverage across the DC metro area. See all appliance repair services in Mount Vernon, VA.
Neighborhoods we regularly cover in Mount Vernon, VA: Fort Hunt, Hybla Valley and Hollin Hills.
We're based in Alexandria, about 7 miles from Mount Vernon. Same-day and next-day appointments are available when the technician route has open windows; call or book online for the earliest option. Appointments cost the same on weekdays, evenings and weekends - our hours run 8 AM to 10 PM Monday through Saturday and 10 AM to 10 PM on Sunday, all at one standard rate.
Many microwave repairs are completed in a single visit once the technician has diagnosed the fault and confirmed the parts on hand. If a specific part has to be ordered, we schedule a short return visit to finish the job.
Appliance Surgeon charges $75 for the diagnostic visit, or $115 for a double unit (such as a double wall oven, washer-dryer combo or stacked laundry), and the fee is credited toward the repair if you approve the quote. Labor starts at $200 and stays there on about 9 in 10 repairs; more complex jobs can reach $450. Parts are extra and listed in the quote. Door switches and diodes are inexpensive; a magnetron costs more but usually still beats replacing a built-in unit and matching the cabinetry. We quote after diagnosis, before any work - and the high-voltage interior is exactly why this is never a do-it-yourself estimate. Typical price ranges by appliance are in our appliance repair cost guide.
Online microwave repair requests from the Mount Vernon area have been for not heating. Common calls include microwave not heating, turntable not moving, sparking inside, door switch failure, control panel issue and unusual noise. The exact cause is confirmed during diagnosis.
On an over-the-range or built-in model, usually. The repair is typically a single high-voltage part, and replacing the whole unit means remounting and matching the space. On a small countertop model a new one may cost less, and we'll tell you.
It's one of the switches that confirm the door is closed before the microwave can run. If one fails, the microwave may not start, may stop mid-cycle or may blow a fuse. They're inexpensive but must be replaced with the right part.
Only two checks are safe: the outlet and breaker, and whether the door closes fully. Stop there - the high-voltage capacitor inside holds a dangerous charge even when the microwave is unplugged, which is why this is the one appliance we tell everyone never to open.