Silver
Essential Home Care
- ✓1 HVAC system — spring & fall visits
- ✓Up to 5 major appliances
- ✓1 annual appliance check-up
- ✓15% off all repair labor
- ✓HVAC diagnostic just $69

Talk to an expert
(469) 638-3215Microwave not heating, sparking, or the vent fan stopped working? ALAS Appliance Repair fixes over-the-range, built-in, drawer and combination microwaves across Denton, from the Downtown Denton Square and the US 380 corridor to Southridge, Robson Ranch and the UNT area.
Business Profile

In Denton’s student rentals, the microwave is often the most-used appliance in the kitchen, running several times a day for several roommates. That much use wears out door switches, latches and turntable motors, and a door that is slammed shut thousands of times can stop the unit from starting at all. Food that stays cold while the light is on and the plate turns usually points to a failed magnetron, diode or capacitor; that capacitor can hold a charge after unplugging, so only a technician should open the case.
Over-the-range units are standard in many homes built since the 2000s, including much of Robson Ranch and Preserve at Pecan Creek, where the microwave also serves as the range vent. A loud or feeble vent fan on those units usually traces to greasy filters or a tired fan motor, and the filters are the place to start. Older homes near the Square are more likely to have a countertop unit or a built-in added during a remodel. When booking, tell us the type, the brand and what it is doing.
Our Plano-based technicians cover Denton from the Downtown Denton Square and the I-35E, I-35W and US 380 corridors to the West Denton historic neighborhoods, Southridge, Robson Ranch, Preserve at Pecan Creek and the rentals around UNT and TWU.
Common microwave problems
The microwave problems we see most often, and the parts a technician checks first for each one.
| Symptom | Common causes a technician checks | Guide |
|---|---|---|
| Runs but won’t heat | Failed magnetron, high-voltage diode or capacitor, faulty door switch, failed transformer or thermal cutoff | Heat one cup of water for one minute. If it is still cold, stop using the microwave and schedule a diagnosis.Possible causes a technician checks: Failed magnetron, high-voltage diode or capacitor, faulty door switch, failed transformer or thermal cutoff Schedule a diagnosis |
| Sparking or arcing inside | Burned or greasy waveguide cover, metal or foil, food buildup, chipped interior paint, damaged stirrer | Remove any metal and wipe the interior. If sparks continue, stop using it.Possible causes a technician checks: Burned or greasy waveguide cover, metal or foil, food buildup, chipped interior paint, damaged stirrer Schedule a diagnosis |
| Microwave won’t start or is dead | Blown fuse, failed door switch, control lock on, failed control board, tripped breaker | Check the breaker and make sure the control or child lock is off.Possible causes a technician checks: Blown fuse, failed door switch, control lock on, failed control board, tripped breaker Schedule a diagnosis |
| Turntable won’t turn | Worn turntable motor, broken coupler, misaligned roller ring or glass tray | Reseat the glass tray and roller ring so they sit flat on the coupler.Possible causes a technician checks: Worn turntable motor, broken coupler, misaligned roller ring or glass tray Schedule a diagnosis |
Our main microwave repair page explains common problems, repair-or-replace decisions and how a repair visit works, in more detail.
Urgent repair
A microwave holds high voltage even after it is unplugged. If you see sparks, smoke or flames, or it keeps running with nothing pressed, follow these steps and call us. After-hours emergency service is available for an added fee in Denton.
Preventive maintenance, priority service, and repair savings — all under one membership.
Essential Home Care
Premium Home Care
Elite Home Protection
Yes. ALAS repairs microwaves for Denton homes and rental properties, including the Downtown Denton Square, the Oak-Hickory and West Denton historic districts, Bell Avenue, Crestwood Heights, Southridge, Forrestridge, Robson Ranch, Preserve at Pecan Creek and the UNT and TWU areas.
We serve Denton ZIP codes 76201, 76205, 76207, 76208, 76209 and 76210, and the part of Denton in ZIP code 76226. Enter your ZIP code on this page to confirm service at your address.
Often it is, especially when replacing it means matching the mounting plate and cabinet opening. Common repairs on these units include the door switch, turntable motor, vent fan, light and control board. If the unit has stopped heating, we check the high-voltage parts and tell you whether the repair cost makes sense against a new microwave.
No. Stop using it. Arcing usually starts at a burned waveguide cover, chipped interior coating or a stray piece of metal, and running it anyway risks the magnetron. If the microwave belongs to the property, tell your manager. A technician can inspect it and replace the cover or other parts where that is practical.
Yes. We cover southeast Denton, including Preserve at Pecan Creek near Lake Lewisville and the neighborhoods around Edwards Road. Many homes there have over-the-range microwaves that vent the cooktop below. The model tag is typically visible when the door is open, along the frame, and it helps to have it ready.
Where we work in Denton
ALAS provides microwave repair across Denton, including the Downtown Denton Square, the Oak-Hickory and West Denton historic districts, Bell Avenue, Crestwood Heights, Southridge, Forrestridge, Robson Ranch, Preserve at Pecan Creek and the UNT and TWU areas, covering ZIP codes 76201, 76205, 76207, 76208, 76209 and 76210 and the Denton portion of 76226. Check your ZIP code to confirm service at your address.
Denton service directory
Our local team handles every appliance and piece of commercial equipment below. See everything ALAS does in Denton.