Microwave repair typically costs $100 to $250, with a national average near $175. Minor repairs may cost $70 to $100, while a control board, door assembly, transformer, or multiple failed components can raise the total to $300 to $500 or more.
Whether a microwave is worth fixing depends mainly on its type and replacement cost. A basic countertop model is often cheaper to replace once professional repair exceeds $100 to $150. Repairing a built-in, drawer, convection, or over-the-range microwave may make more financial sense because replacing the unit can also require installation, cabinet work, trim kits, or ventilation changes.
A practical rule is to repair the microwave when the estimate is less than approximately 50% of the cost of a comparable installed replacement, especially when the appliance is relatively new and only one component has failed.
Microwave Repair Cost at a Glance
| Microwave repair | Typical installed cost |
|---|---|
| Average microwave repair | About $175 |
| Common repair range | $100–$250 |
| Minor repair | $70–$150 |
| Major repair | $300–$500+ |
| Appliance technician labor | $50–$125 per hour |
| Minimum service fee | $70–$130 |
| Magnetron replacement | $100–$300 |
| High-voltage diode | $80–$170 |
| Control board | $120–$380 |
| Touchpad or control panel | $120–$330 |
| Turntable motor | $90–$200 |
| Door switch | $80–$170 |
| Door assembly | $170–$330 |
| Fuse replacement | $75–$165 |
| Transformer | $100–$300 |
| Exhaust fan motor | $130–$330 |
| Thermostat | $80–$170 |
| Power cord | $80–$180 |
| Professional light replacement | $80–$180 |
These figures generally include replacement parts and professional labor. Brand, installation style, accessibility, part availability, service minimums, and additional electrical work can change the final invoice.
Microwave Repair Parts and Labor Cost
Technician labor
Appliance technicians generally charge $50 to $125 per hour for microwave repair. Many companies instead use flat-rate pricing based on the failed part and expected repair time.
Labor costs are usually higher for:
- Built-in microwaves
- Over-the-range units
- Microwave drawers
- Combination wall ovens
- Premium or imported brands
- Appliances installed inside custom cabinetry
- Units requiring two people for removal
A countertop microwave can usually be placed on a workbench immediately. A technician repairing an over-the-range or built-in model may first need to disconnect ventilation, remove mounting hardware, protect surrounding cabinets, and reinstall the appliance after the repair.
Diagnostic and service fee
The minimum service or diagnostic fee generally costs $70 to $130 and may include travel, diagnosis, and part of the first labor hour. Some companies credit this fee toward the completed repair, while others charge it separately.
Before scheduling service, ask whether the estimate includes:
- Diagnostic fee
- Replacement part
- Installation labor
- Second appointment
- Travel charges
- Removal and reinstallation
- Testing after repair
- Parts-and-labor warranty
For an inexpensive countertop microwave, the minimum service fee alone may approach the cost of a new appliance.
Microwave Repair Cost by Common Problem
Microwave runs but does not heat
Repairing a microwave that operates without heating generally costs $80 to $380, depending on the failed component.
Possible causes include:
| Possible failure | Typical repair cost |
|---|---|
| Magnetron | $100–$300 |
| High-voltage diode | $80–$170 |
| Transformer | $100–$300 |
| Control board | $120–$380 |
| Door switch | $80–$170 |
| Fuse | $75–$165 |
The magnetron produces the microwave energy used to heat food. However, a microwave that does not heat does not automatically need a magnetron. The diode, transformer, door interlock, fuse, wiring, or control board may create the same symptom.
A magnetron replacement is rarely economical on a low-cost countertop microwave. It can be worthwhile on a newer built-in or over-the-range model when the remaining components are in good condition and replacement would require professional installation.
Magnetron replacement
Microwave magnetron replacement costs $100 to $300 on average. The part itself commonly costs $50 to $200, and some repairs also require replacing the high-voltage diode.
Possible signs of magnetron trouble include:
- Microwave runs without heating
- Loud buzzing or humming
- Burning odor
- Unusual electrical noises
- Repeated fuse failure
- Black marks near an internal vent
The symptoms should be professionally diagnosed before ordering the part because several less expensive components can prevent heating.
Diode replacement
Replacing a microwave diode generally costs $80 to $170. A failed diode may cause the appliance to run without heating, make unusual noises, or produce internal sparking.
Because the diode works with the magnetron and transformer, the technician should test the complete high-voltage heating circuit rather than replacing parts based only on symptoms.
Microwave will not turn on
Repairing a microwave that has no power commonly costs $75 to $380.
Possible repairs include:
| Possible failure | Typical cost |
|---|---|
| Fuse | $75–$165 |
| Door switch | $80–$170 |
| Power cord | $80–$180 |
| Touchpad | $120–$330 |
| Control board | $120–$380 |
Before scheduling service, confirm that the microwave is plugged directly into a working wall outlet and that the breaker has not tripped. The U.S. Fire Administration advises plugging microwave ovens and other cooking appliances directly into wall outlets rather than using extension cords.
If the appliance repeatedly trips the breaker, produces a burning smell, or has a damaged cord, stop using it until the microwave and circuit have been inspected.
Turntable is not spinning
Turntable motor replacement generally costs $90 to $200. The problem may also involve the glass tray, roller guide, coupler, control board, or food container preventing rotation.
Check that:
- The tray is correctly positioned
- The roller guide is clean
- No food debris blocks movement
- The turntable setting is enabled
- The container is not touching the cavity walls
A turntable problem is usually worth repairing on a built-in microwave. On a low-cost countertop model, compare the estimate with the price of replacement.
Touchpad or buttons do not work
Replacing a microwave touchpad or control panel typically costs $120 to $330. Control-board replacement costs approximately $120 to $380.
Common symptoms include:
- Buttons do not respond
- Only some buttons work
- Display operates but cooking will not start
- Microwave continues after the timer ends
- Unit shuts off shortly after starting
- Random error codes appear
The touchpad and electronic control may be sold as one assembly on some models, increasing the replacement-part price.
Door will not close properly
Microwave door-switch replacement costs $80 to $170, while replacing the complete door assembly typically costs $170 to $330.
Possible door-related problems include:
- Broken latch
- Failed interlock switch
- Bent hinge
- Cracked glass
- Damaged seal
- Door that does not close firmly
- Microwave operating after the door opens
Door damage is a safety issue rather than only an inconvenience. The FDA recommends discontinuing use when the door does not close firmly, is bent or warped, or has damaged hinges, latches, or seals. A microwave that continues operating with the door open should be stopped immediately.
Microwave sparks or arcs
The repair cost for a sparking microwave may range from a minor cleaning expense to $300 or more, depending on whether the cause is food residue, inappropriate cookware, a damaged waveguide cover, diode failure, transformer trouble, or internal cavity damage.
The FDA advises following the manufacturer’s instructions regarding approved containers and generally avoiding metal pans or aluminum foil unless the manual specifically permits their use.
Stop the microwave and inspect it when sparking occurs repeatedly without an obvious removable metal object. Do not continue operating a unit with burned cavity walls, smoke, damaged wiring, or a burning odor.
Exhaust fan does not work
Exhaust fan motor replacement generally costs $130 to $330. This repair applies primarily to over-the-range microwaves that also function as a range hood.
The problem may also involve:
- Clogged grease filter
- Saturated charcoal filter
- Broken fan blade
- Damaged thermostat
- Control-board failure
- Vent obstruction
Clean or replace accessible filters according to the manufacturer’s instructions before assuming the motor has failed.
Microwave makes loud noises
Unusual buzzing, grinding, clicking, or rattling may cost $80 to $300 or more to repair.
Potential causes include:
- Magnetron
- Diode
- Transformer
- Turntable motor
- Exhaust fan
- Loose fan blade
- Food debris
- Damaged roller guide
Stop using the microwave when the noise is accompanied by smoke, sparking, a burning smell, or failure to heat.
Microwave Repair Cost by Type
| Microwave type | Typical repair cost |
|---|---|
| Countertop | $80–$180 |
| Over-the-range | $130–$330 |
| Built-in | $130–$330+ |
| Drawer or premium built-in | $150–$400+ |
| Commercial microwave | $200–$500 |
Countertop microwaves are the easiest to access and repair. Built-in, drawer, and over-the-range models cost more because removal and reinstallation add labor, and the appliances often use more expensive model-specific components.
How Much Does Microwave Replacement Cost?
A new microwave commonly costs $100 to $600, but the price varies considerably by installation type.
| Microwave type | Appliance price |
|---|---|
| Countertop microwave | $50–$500 |
| Over-the-range microwave | $150–$600 |
| Built-in microwave | $400–$2,000 |
| Microwave drawer | $1,000–$1,400 |
| Convection microwave | $180–$800 |
| Microwave and oven combination | $2,500–$3,500 |
These prices cover the appliance only.
Replacement installation costs
| Installation project | Typical labor cost |
|---|---|
| Countertop setup | $0–$80 |
| Standard over-the-range replacement | $100–$300 |
| Built-in microwave installation | $220–$580 |
| New over-the-range venting | $300–$600+ |
| New electrical outlet | $150–$350 |
| Cabinet modification | About $400–$500 per cabinet |
| Disposal of old microwave | $20–$50 |
An inexpensive countertop microwave requires little or no installation. Replacing a built-in or over-the-range model can cost much more because the project may involve mounting, trim kits, cabinet alterations, electrical work, or ventilation.
Is It Worth Fixing a Microwave?
Repair is usually worth it when:
- The microwave is less than four or five years old
- The repair costs less than half of replacement
- Only one component has failed
- The appliance is built in or over the range
- Replacement requires cabinet or vent modifications
- The unit is a premium drawer or convection model
- The manufacturer warranty remains active
- The part is readily available
A $200 repair may make financial sense on a built-in microwave that would cost $800 or more to replace and reinstall.
Replacement is usually better when:
- It is a low-cost countertop microwave
- The service fee approaches the price of a new unit
- The appliance is seven to ten years old
- Several components have failed
- The repair exceeds 50% of replacement cost
- The magnetron has failed on a budget model
- Replacement parts are discontinued
- The cavity is rusted, burned, or structurally damaged
- The door or safety interlocks cannot be reliably restored
- The microwave has produced repeated smoke or electrical problems
Microwaves commonly last approximately 7 to 10 years. Manufacturers may stop producing certain replacement parts for models that are four to seven years old, making some repairs more difficult or expensive.
Repair-or-Replace Cost Examples
Basic countertop microwave
- Comparable new microwave: $140
- Diagnostic and repair estimate: $160
- Appliance age: six years
Replacement is the more economical choice because the repair costs more than a new unit and does not reset the age of the remaining components.
Over-the-range microwave
- Repair estimate: $225
- New microwave: $400
- Installation: $200
- Installed replacement cost: $600
- Appliance age: four years
Repair is financially reasonable because it costs considerably less than half of the installed replacement price.
Premium built-in microwave
- Control-board repair: $350
- Comparable appliance: $1,200
- Installation and trim work: $400
- Installed replacement cost: $1,600
Repair is likely the better value if the door, magnetron, and remaining components are in good condition.
Can You Repair a Microwave Yourself?
Homeowners may safely replace external items such as:
- Glass turntable
- Roller guide
- Removable filter
- Light bulb designed for user replacement
- Accessible handle when permitted by the manual
Internal electrical repairs should be left to a trained appliance technician. Microwave high-voltage components can remain hazardous after the appliance is unplugged, and improper door or interlock repairs may create additional safety concerns.
Do not remove the outer cabinet to replace the magnetron, diode, transformer, capacitor, fuse, control board, or internal wiring unless you are professionally trained to service microwave ovens.
Microwave Safety Warning Signs
Stop using the microwave and arrange professional evaluation when:
- The door does not close firmly
- Hinges, latches, or seals are damaged
- The unit operates with the door open
- Smoke or flames appear
- Sparking continues without metal inside
- The power cord is damaged
- The appliance repeatedly trips the breaker
- There is a burning electrical smell
- The cavity is severely rusted or burned
- The glass door is cracked
The FDA states that a microwave in good condition should not leak microwave energy, but damaged doors, seals, hinges, or latches can create a potential leakage risk.
If a fire starts inside the microwave, the U.S. Fire Administration advises turning it off, keeping the door closed, and unplugging it when this can be done safely. Do not open the door until the fire is out.
How to Save Money on Microwave Repair
- Check the warranty first. Parts or labor may still be covered.
- Search the model for recalls. A manufacturer remedy may include free repair or replacement.
- Provide the exact model number. The technician can check part availability before arriving.
- Ask whether the diagnostic fee is credited.
- Compare repair with installed replacement cost. Include installation, trim, venting, and disposal.
- Clean the cavity and filters regularly. Food buildup can contribute to odors, smoke, and poor ventilation.
- Use approved cookware. Follow the manufacturer’s instructions regarding metal and containers.
- Avoid operating the microwave empty. Follow the instructions for the specific model.
- Request a written repair warranty.
- Replace inexpensive countertop units when repair exceeds their value.
Frequently Asked Questions
How much does microwave repair cost?
Microwave repair generally costs $100 to $250, with an average near $175. Major repairs can cost $300 to $500 or more.
Is a microwave worth repairing?
A built-in or over-the-range microwave is often worth repairing when the estimate is less than half the installed replacement cost. Basic countertop units are commonly cheaper to replace.
How much does magnetron replacement cost?
Magnetron replacement costs approximately $100 to $300, including parts and labor.
How much does it cost to fix a microwave that does not heat?
The repair generally costs $80 to $380, depending on whether the problem is the diode, magnetron, transformer, door switch, fuse, or control board.
Is it worth fixing a five-year-old microwave?
It may be worthwhile when it is a built-in, drawer, convection, or over-the-range model with one repairable failure. A budget countertop model may be more economical to replace.
How long does a microwave last?
Most microwaves last approximately 7 to 10 years, although usage, quality, maintenance, and part availability affect their service life.
Who repairs microwaves?
Appliance repair technicians, factory-authorized service centers, and technicians trained by the manufacturer repair microwaves. Internal electrical and high-voltage work should not be treated as a basic DIY project.
Conclusion
Microwave repair generally costs $100 to $250, with a national average near $175. Fuses, door switches, diodes, and turntable motors are among the less expensive repairs. Magnetrons, control boards, transformers, door assemblies, and multiple-component failures cost more.
Repair is usually worthwhile for a newer built-in, drawer, convection, or over-the-range microwave when the estimate remains below half of the installed replacement cost. Replacing the appliance is generally more economical for an older countertop microwave or when the service fee and repair together approach the price of a new unit.
Before approving work, compare the complete repair estimate with the appliance price, installation, ventilation, cabinet modifications, disposal, age, warranty, and condition of the door and cavity. Stop using the microwave immediately when it operates with the door open or shows signs of smoke, fire, damaged seals, electrical failure, or continuing sparks.