Microwave Repair in Toronto & GTA - Built-in, Over-the-Range and Countertop
We repair built-in, over-the-range and countertop microwaves with problems like no heat, sparks or arcing, loud humming, turntable not turning, dead display or error codes. All work is done by Octopus Royal in-house technicians - no subcontractors, no commission-based upselling.
Professional Microwave Repair for Condos, Homes and Rental Units
Microwaves are more than a simple box that heats food. Inside there are high voltage circuits, safety interlocks and sensors. When they stop working, you need a technician who understands both safety and proper diagnosis.
We repair over-the-range, built-in and some countertop microwaves across Toronto and the GTA. Our technicians are in-house, non-commission and focused on giving you honest guidance on repair vs replacement, especially for older units.
Same-day or next-day appointments are often available, and every repair is backed by a 1-year workmanship warranty.
📞 Request Microwave Service
Common Microwave Problems We Repair
Below are the most common microwave issues we see across the GTA. We include simple, safe checks you can try, and explain when it is time to stop and let a professional handle it.
1. Microwave Runs But Does Not Heat
If the microwave light comes on, the turntable spins and it sounds like it is working, but food stays cold, there is usually a problem in the high voltage system.
Most likely causes
- Failed magnetron
- Defective high voltage diode or capacitor
- High voltage transformer failure
- Door switches not confirming the door is closed correctly
- Control board not sending power to the high voltage circuit
Basic checks you can do safely
- Test with a microwave-safe cup of water for 1 to 2 minutes to confirm there is truly no heating.
- Make sure the door is closing firmly and the latch is not loose or broken.
- Unplug the unit for a few minutes, plug it back in and test once more.
Internal high voltage components can hold a dangerous charge even when unplugged. Do not open the cabinet or try to access parts behind the control panel.
🔥 Microwave not heating? Book a diagnostic2. Sparks, Arcing or Burning Smell Inside The Microwave
Sparks inside the cavity or a burning smell are serious warning signs. They can damage the interior coating and internal components if not fixed.
Common causes
- Metal utensil, foil or twist tie left inside by mistake
- Worn or damaged waveguide cover
- Food or grease buildup burned into one area
- Arcing from a damaged rack support or chipped cavity paint
- Failing magnetron causing unusual noises and smells
DIY checks
- Stop the cycle immediately if you see sparks.
- Carefully check the interior for metal objects, foil or metal-trimmed dishes.
- Inspect the small cover on the side wall (waveguide cover) for burns or holes.
- Clean heavy grease and food splatters once the unit has cooled.
Continued use with arcing can permanently damage the cavity and magnetron. If the cover is burned or you see damaged paint or plastic, stop using the microwave until it is inspected.
⚠️ Saw sparks inside? Arrange a safety inspection3. Microwave Completely Dead - No Lights, No Display
When the microwave shows no signs of life, the issue can be as simple as a tripped breaker or as complex as an internal fuse or control board.
Possible causes
- Tripped kitchen breaker or GFCI outlet
- Blown internal fuse after a surge or door switch issue
- Faulty door switches causing the unit to stay off
- Defective main control board
- Loose power cord or damaged outlet
DIY checks (non-technical)
- Test another small appliance in the same outlet to confirm there is power.
- Check the breaker panel and reset any tripped breakers.
- If plugged into a GFCI outlet, press reset and test again.
- Unplug the microwave for a few minutes, then plug back in and see if the display returns.
Internal fuses and wiring are not user-serviceable. They are located near high voltage parts and should only be checked by a trained technician.
⚡ Microwave dead? Let us diagnose it4. Turntable Not Turning or Loud Humming Noise
If the microwave makes unusual noises or the turntable does not rotate, food may heat unevenly and internal parts may be under stress.
Common causes
- Turntable support or coupler broken or worn
- Turntable motor failing or jammed
- Food or debris stuck under the turntable
- Magnetron humming louder than normal due to internal wear
- Cooling fan or internal fan noise
DIY checks
- Remove the glass tray and support ring and clean underneath.
- Check that the tray is seated correctly on the coupler.
- Run a short test with a cup of water and listen for grinding or scraping.
Ongoing loud humming or mechanical noise can mean a failing motor or magnetron. It is best to have this checked before it fails completely.
🔊 Strange noise or no turntable? Book a service5. Keypad, Display or Door Problems
Microwaves also fail on the user interface side - buttons stop responding, displays fade, or the door will not latch correctly. These issues can make the unit unusable even if it still heats.
Typical causes
- Worn or damaged membrane keypad
- Loose or faulty door latches and switches
- Moisture or steam affecting the display or control board
- Cracked handle or misaligned door hinges
DIY steps
- Wipe the keypad gently with a slightly damp cloth and let it dry fully.
- Check that the door closes smoothly and the latch clicks in place.
- Watch for error messages that mention door or key issues.
If only some buttons work, or you have to press very hard, the keypad or control usually needs replacement.
📟 Keypad or door issue? Schedule a visit⚠ Microwaves contain high voltage components and a large capacitor that can hold a dangerous charge even when the unit is unplugged. For your safety, do not remove the outer cabinet or touch internal wiring. If you see smoke, sparks or smell burning, stop using the microwave and unplug it if it is safe to do so.
Microwave Maintenance Tips To Reduce Breakdowns
Simple microwave care can prevent many common problems, especially in busy family kitchens and rental units.
- Cover food when heating: This reduces splatter and keeps the interior cleaner.
- Clean spills regularly: Wipe the interior with mild soap and water once it cools down.
- Do not run empty: Running with nothing inside can stress the magnetron.
- Avoid metal and foil: Only use microwave-safe dishes - no metal utensils or plates with metallic trim.
- Check the door seal: Make sure the door closes properly and the gasket is not damaged.
- Ventilation for over-the-range units: Keep filters clean and do not block top or front vents.
Annual appliance maintenance visits can also include a quick microwave safety check as part of our appliance protection and maintenance plans.
Microwave Repair FAQ - Toronto & GTA
1. Is it worth repairing a microwave or should I replace it?
It depends on the age, brand and type of microwave. Built-in and over-the-range microwaves are usually worth checking, because replacement and installation cost more. For older basic countertop units, sometimes replacement makes more sense. Our in-house technician will explain repair options and costs clearly so you can decide what is best for your situation.
2. Do you repair built-in and over-the-range microwaves?
Yes. We work on over-the-range, built-in and some countertop microwaves in houses, condos and rental units. For over-the-range models we can also handle safely removing and reinstalling the unit when needed for service.
3. How much does a microwave repair usually cost?
We start with an $85 service call in Toronto and the GTA, which is waived when you go ahead with the repair. The final cost depends on the parts required and the time needed. Before any work is done, our technician will give you a clear, up-front price so you can approve or decline the repair.
4. How long does a typical microwave repair take?
Many common issues can be diagnosed and repaired in a single visit, especially if parts are available locally. If a special part is required, we will order it, schedule the return visit and keep you updated so you always know what to expect.
5. Do you offer warranty on microwave repairs?
Yes. All our microwave repairs are backed by a 1-year workmanship warranty. We also offer optional appliance protection plans where approved repairs can include parts and labor coverage plus annual maintenance.
Why Homeowners, Landlords and Property Managers Choose Octopus Royal
- Only in-house technicians - no subcontractors, no commission-based upselling
- $85 service call, waived when you repair with us
- Clear communication and realistic time windows so you are not waiting all day
- 2 million liability insurance for peace of mind in homes, condos and rental properties
- 1-year workmanship warranty on microwave repairs
- Honest advice on when it is better to repair and when replacement makes more sense
Microwave Brands We Service
We work with most major microwave brands found in GTA homes and condos, including Samsung, LG, Whirlpool, Maytag, GE, Frigidaire, Bosch, Panasonic, KitchenAid, Kenmore and more.
If your brand is not listed, contact us - in many cases we can still service it or advise on the best solution.
Book Microwave Repair in Toronto & GTA
Whether your microwave has no heat, sparks, loud noise, a dead display or door problems, our in-house technicians can help you decide the best option - safe repair or smart replacement.
We provide clear pricing, honest recommendations and quality workmanship, backed by our 1-year workmanship warranty.