Microwave sparking and smoking in Seminole

Cracking noise, sparks and smoke when the start button was pressed, then a strong burning smell. Replaced the magnetron kit.

$99service call, credited to the repair

90 daysparts and labor warranty

8 to 4Monday to Friday

$125commercial service call

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$99 service call, credited to the repair. $125 for commercial units. Or call (813) 822-5910, Mon to Fri, 8 AM to 4 PM.

Work orderMar 3, 2026

Area: Seminole
Unit: Microwave
Symptom: Cracking noise, sparks and smoke when the start button was pressed, then a strong burning smell
Found: The magnetron had broken
Outcome: Replaced the magnetron kit

Report by Sam Ralin, owner and senior technician

Over-the-range microwave with the door open before magnetron replacement — The microwave before the magnetron kit went in.

At a managed rental in Seminole, a microwave made an electrical cracking noise when it was started, then sparked, smoked and gave off a strong burning smell.

The technician found the magnetron broken. The magnetron is the part that makes the microwaves that heat the food. A failing one can arc and smoke. The magnetron kit was replaced.

If your microwave sparks

Stop it right away and unplug it, or switch off its breaker if it is built in.
Check for metal inside: a twist tie, foil or a dish with a metal rim. That is the most common cause of sparks.
If there was no metal, do not use it again until it is checked.

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