Unplug it
Before cleaning or inspecting.
Microwave not heating, starting or working?
Microwaves contain high-voltage parts that stay dangerous even when unplugged. Do not open the case. Unplug it and call 833-877-1717. RepairNowUSA connects the request. An independent appliance technician does the repair.
Am I in the right place?Yes for a microwave that will not start, will not heat, sparks, or has a damaged door.
Is this urgent?Sparking or smoke: stop it and unplug it.
What do I do next?Unplug it and call 833-877-1717.
Sparking: microwave sparking. Not heating: microwave not heating.
RepairNowUSA editorial review · Last substantively reviewed October 13, 2026 · Review standards
What to do now
Check the door
Damaged doors or hinges can leak microwave energy. Do not use it.
Check the outlet
Try resetting the breaker or GFCI.
Never open the case
Microwave capacitors can hold a lethal charge long after unplugging. Repairs are for trained technicians only. If you see smoke or flames, or sparking that does not stop, get out and call 911.
Common causes
Magnetron
Runs but no heat.
Door switch
Will not start.
Fuse
Completely dead.
Control board
Unresponsive.
What to have ready when you call
- Property ZIP code, home or business
- Brand and model number (usually inside the door or on the back)
- Countertop or over-the-range
What happens when you call RepairNowUSA
- Describe what is happening in plain words and give the property ZIP code. You do not need to know which trade to ask for.
- RepairNowUSA checks for a participating independent provider who handles microwave repair in that area.
- If one is available, you are connected. The provider confirms timing, access, scope and price with you before any work.
- The provider, not RepairNowUSA, diagnoses and performs the repair.
RepairNowUSA is a referral and connection service. Provider availability and response times vary by location, time and demand, and are not guaranteed. Before you approve work, ask what was found, the price, the timing and what is not included.
Call 833-877-1717Microwave not heating questions
Is it worth repairing a microwave?
Over-the-range models often are; small countertop units are usually replaced.
Can I call at night or on a weekend?
Yes. You can call 833-877-1717 at any time, including nights, weekends and holidays. Whether an independent provider can come out right away depends on your ZIP code, the time and provider capacity, so availability is not guaranteed.
Authoritative references
These public sources give general safety context. They do not replace an on-site evaluation, and RepairNowUSA does not perform the work.