Microwave Repair, Near Me in Reston, VA
A microwave that hums but won't heat, sparks inside, or has a dead keypad is more than an inconvenience — it's often a sign of a failing part worth repairing before it fails completely. We service countertop, over-the-range, and built-in microwaves with same-day appointments.
6 Microwave Problems We Fix Every Week
Microwaves hide most of their components behind a sealed housing, so a problem that looks simple can point to several possible causes — our diagnosis finds the real one.
Runs but doesn't heat food
Usually a failed magnetron, a worn diode, or a faulty high-voltage capacitor.
Sparking or arcing inside
Often caused by a damaged waveguide cover or metal utensils, but can also indicate a cracked turntable support.
Keypad or display not responding
Worn membrane keypad or a control board that has lost communication with the keys.
Turntable won't turn
Broken drive motor, a slipped roller guide, or a misaligned turntable coupler.
Door won't latch or close
Worn door latch switches — a safety-critical part that stops the unit from running until fixed.
Loud buzzing or humming noise
Often the transformer or magnetron under strain — worth checking before it fails completely.
3 Signs to Stop Using It
Visible sparks or burning smell — unplug the unit and stop using it until it's inspected.
Door doesn't seal tightly — a safety interlock issue that should be fixed before further use.
Metallic rattling from inside the housing — could mean a loose or failing internal part near the magnetron.
A Word on Microwave Safety
Microwaves store high-voltage charge in their capacitor even when unplugged, which is why we strongly discourage DIY repair on these units. Our technicians are trained to safely discharge components before servicing, and every repair includes a leak and function test before we hand it back.
Never open a microwave's casing yourself. The high-voltage capacitor inside can hold a dangerous charge even unplugged. Leave internal repairs to a trained technician.
How We Repair Your Microwave
Safe Discharge
We safely discharge the high-voltage capacitor before opening the unit.
Diagnosis
Test the magnetron, diode, transformer, and control board to isolate the fault.
Flat-Rate Quote
One clear price before any repair begins — or an honest replace recommendation if repair isn't worth it.
Repair & Test
We confirm even heating and a safe door seal before we leave.
All Major Microwave Brands
Microwave Repair Questions
Is it worth repairing a microwave or should I just replace it?
For built-in and over-the-range models, repair is usually worth it because replacement includes cabinetry or venting work. For an older basic countertop unit, we'll tell you honestly if replacement makes more sense.
Why does my microwave hum but not heat anything?
This is the most common microwave complaint and usually points to a failed magnetron, diode, or high-voltage capacitor — all repairable, but not something to open yourself.
Is it safe to keep using a microwave that sparks?
No — stop using it immediately and unplug it. Sparking can damage the magnetron further and is a fire-risk sign we treat as urgent.
Do you repair over-the-range microwaves with a vent fan?
Yes, including the vent fan and light assembly, which are common failure points on over-the-range models in addition to the cooking function itself.
Microwave Not Heating? We Can Help Today.
Same-day microwave repair across Reston, VA — countertop, over-the-range, and built-in.
Call or text now(571) 760-4650