A microwave that hums but doesn't heat, sparks inside, or won't turn on is more than annoying — it can be a safety issue. Our technicians repair countertop, built-in, and over-the-range microwaves for homes across Lowell, MA.
Because a microwave stores high voltage even when unplugged, this is one repair we don't recommend doing yourself. We discharge the capacitor safely, then diagnose the magnetron, door switches, or control board.
Almost always a failing magnetron or a blown high-voltage diode. We test both before replacing anything.
Often caused by a worn wave guide cover or metal touching the cavity wall. This is a quick, low-cost fix.
A faulty door switch is the usual culprit. We replace the switch and test the interlock system.
Points to a failing transformer or capacitor. We stop use immediately and inspect for a safe repair.
Every microwave repair starts with a full power discharge for safety, then testing of the magnetron, high-voltage diode, capacitor, door switches, and turntable motor. Over-the-range models also get a vent fan and light check included.
This usually means the magnetron, the part that generates heat, has failed. It's a common wear-and-tear part after several years of use.
Yes. Stop using it right away and unplug it. Sparking can damage the cavity permanently and, in rare cases, start a fire.
Yes, we service built-in and over-the-range units, including the exhaust fan, light, and control panel.
Call now for a same-day estimate, or book your appointment online in under a minute.
Appliance Repair 
