Professional repair for countertop, over-the-range, and built-in microwave ovens. We fix heating failures, sparking, turntable issues, door problems, and more — all major brands, same-day service available.
Modern microwaves — especially over-the-range and built-in models — are sophisticated appliances that combine microwave cooking, ventilation, and lighting systems in a single unit. When one fails, the impact on your kitchen routine is immediate. PRT Appliance provides professional microwave repair throughout Toronto and the Greater Toronto Area, handling everything from a dead magnetron to a jammed door latch.
Our technicians are trained to safely work on microwave internal components, including the high-voltage capacitor discharge procedure that must be performed before any internal work — a step that is genuinely dangerous without proper training and equipment. We service countertop microwaves, over-the-range units (OTR), and built-in microwave drawer and wall models from all major brands including Samsung, LG, Panasonic, GE, Whirlpool, Bosch, Miele, Sharp, and more.
We provide an upfront quote after diagnosis, use quality replacement parts, and back every repair with a warranty on both parts and labour. For over-the-range and built-in models especially, professional repair is almost always more cost-effective than the complexity and expense of full replacement and reinstallation.
Microwave not working? Call PRT Appliance for safe, professional repair across the GTA — often same day.
(416) 524-2633 Call Now — Get a Quote Schedule OnlineFrom a magnetron failure to a stuck door latch, our trained technicians handle the full range of microwave faults safely and professionally.
A microwave that runs — the light comes on, the turntable rotates, the timer counts down — but doesn't heat food is one of the most common repair calls we receive. The most likely causes are a failed magnetron (the component that generates microwaves), a faulty high-voltage diode, a burned-out high-voltage capacitor, or a failed thermal cut-out. These are all high-voltage components that must be handled by a trained technician.
Visible sparking or arcing inside the microwave cavity — especially at a specific point on the interior wall — is almost always caused by a burned or damaged waveguide cover (the plastic or mica panel that covers the magnetron opening). Food splatters can burn through this cover over time. In some cases, the cavity itself may be damaged. We inspect the full interior, replace the waveguide cover, and check for further damage.
When the glass turntable stops rotating, food heats unevenly and hot spots develop. The cause is usually a faulty turntable motor, a broken or worn drive coupler (the plastic piece connecting the motor to the turntable ring), or debris jamming the roller guide. We clean the roller guide assembly, test the turntable motor, and replace any failed components to restore even, consistent heating.
A microwave door that won't close, open, or latch properly is a safety issue — most microwaves will not operate if the door is not fully engaged. Common door issues include broken door latch hooks, a failed door switch (interlock switch), a warped door, or a damaged spring. Because microwave door switches are part of the safety interlock system, a faulty switch can also prevent the unit from starting entirely even when the door appears closed.
A blank, dim, or flickering control panel display — or buttons that don't respond — usually indicates a failed control board, a defective display panel, or a damaged membrane switch. In some cases, a tripped fuse causes total display failure. We diagnose the electronics systematically, identifying whether the issue is with the display component itself, the main control board, or a power supply fault.
A microwave that buzzes loudly, makes a grinding sound, or rattles during operation may have a failing magnetron (which produces a loud buzzing as it nears the end of its life), a worn turntable motor, loose internal components, or a faulty cooling fan that's hitting debris or worn bearings. We identify the source of the noise and repair or replace the responsible component before it causes further damage.
Safe, efficient, and transparent — from first call to final test.
Call (416) 524-2633 or schedule online. We offer same-day and next-day appointments across the GTA, 6 days a week.
Our technician safely discharges the capacitor before performing any internal inspection — then provides a written quote before proceeding.
We replace only the failed components with quality parts, reassemble, and perform a full safety check of the door interlock system.
We test the heating, turntable, ventilation (OTR models), and all controls before leaving. Every repair is covered by a written warranty.
We repair countertop, over-the-range, and built-in microwaves from all major brands available in Canada.
PRT Appliance provides safe, professional microwave repair across Toronto and the GTA. From countertop models to over-the-range units, we repair all brands with same-day appointments available.
We serve homeowners throughout the Greater Toronto Area. Find your city below.