Runs but doesn't heat
Magnetron, high-voltage diode, capacitor and transformer testing. We measure before replacing, because the magnetron is the most expensive part and isn't always the culprit.
for Amana, Menumaster, Panasonic and Sharp
We repair commercial microwave ovens for restaurants, convenience stores, coffee shops, hotels, clinics and break rooms in Minneapolis, St. Paul and the surrounding metro. If your microwave runs but doesn't heat, arcs, or won't start, call (651) 364-7466.
$175–$299 Diagnostic · depends on equipment
See brands we serviceSame-day priority
Commercial dispatch first.
Written quote first
In writing before work starts.
OEM parts on truck
Amana Commercial, Menumaster, Panasonic, Sharp.
1-yr written warranty
Parts & labor in writing.
$175–$299 diagnostic, depending on the equipment. The diagnostic is billed separately from the repair, and you get a written quote before any repair work starts. Every completed repair carries a 1-year written parts-and-labor warranty.
Quick answer
When a commercial microwave runs but doesn't heat, the cause is usually a failed magnetron, high-voltage diode or capacitor, or a bad high-voltage transformer. Microwaves hold dangerous voltage even when unplugged, so this isn't a do-it-yourself repair. We service Amana Commercial, Menumaster, Panasonic and Sharp units, and we'll tell you honestly when repair costs more than a new unit. The commercial diagnostic is $175–$299 depending on the unit, billed separately and not credited to the repair, and repairs are quoted in writing first.
Key facts
| Service | Commercial Microwave Repair in the Twin Cities |
|---|---|
| Common repairs | Runs but doesn't heat; Sparking and arcing; Won't start or dead display; Door and latch repair; Turntable, light and fan faults; Program and touchpad faults |
| Diagnostic | $175–$299, depending on the equipment (billed separately from the repair) |
| Typical repair cost | Quoted in writing before any work |
| Warranty | 1-year written parts-and-labor warranty |
| Availability | Same-day appointments, 7am–9pm every day; call early |
| Brands | Amana Commercial, Menumaster, Panasonic, Sharp, Samsung, GE, Whirlpool |
| Phone | (651) 364-7466 |
Need commercial appliance repair? Call 7am–9pm, every day.
Services covered
Magnetron, high-voltage diode, capacitor and transformer testing. We measure before replacing, because the magnetron is the most expensive part and isn't always the culprit.
Burned waveguide covers, damaged cavity paint, or a failed stirrer. Don't keep running a microwave that arcs. It can ruin the magnetron and become a fire risk.
Door switches, interlocks, fuses, control boards and touchpads. Door interlock faults are the most common cause of a unit that does nothing.
Loose or broken hinges and latches in high-volume kitchens. A door that doesn't seal properly shouldn't stay in service.
Turntable motors, drive couplers, interior lights and cooling fans. Overheating from a dead fan shortens the life of the whole unit.
Keypads that no longer register, lost programmed times and control board faults on high-volume programmable microwaves.
Repair vs. replace
A microwave on a busy line may run hundreds of cycles a day. Parts fail on a different schedule than they do at home, and commercial models are built to be repaired.
The capacitor and transformer store dangerous voltage. We discharge and test properly, and we'll tell you if a damaged door or cavity means the unit shouldn't be used.
If a repair costs most of what a new microwave does, we say so. We don't push repairs on units that aren't worth fixing.
Scope and price are quoted before any work starts, and repairs carry a 1-year parts-and-labor warranty.
Repair or replace?
| Situation | Our recommendation |
|---|---|
| Door switch, fuse, diode, capacitor or fan failure | Repair. Modest parts on a unit that is otherwise sound. |
| Magnetron failure on a commercial unit with years of use left | Often worth repairing. We'll quote it against replacement. |
| Rust-through cavity, damaged door seal, or repeated arcing | Usually replace. A compromised cavity or door isn't safe to keep running. |
| Residential-grade microwave used in a commercial setting | Replace with a commercial unit when it fails. Home microwaves aren't built for the duty. |
Brands serviced
If your equipment is down right now
Confirm the unit is plugged in and the breaker is on. Commercial microwaves often draw more current than a standard outlet shares with other equipment.
Make sure the door closes fully with nothing in the latch. A door that doesn't fully seat will stop the unit from starting.
Look inside for scorched spots or burned waveguide cover. If you see sparks, stop using the microwave.
Don't open the housing. The capacitor can hold a dangerous charge even when unplugged.
(651) 364-7466, seven days a week from 7am to 9pm. Give us the brand and model number.
FAQs
Yes. We repair commercial microwave ovens across Minneapolis, St. Paul, the Twin Cities metro and western Wisconsin, with same-day appointments available 7am–9pm every day.
The usual causes are a failed magnetron, high-voltage diode, capacitor or transformer. These need proper testing, because the high-voltage parts hold a dangerous charge.
Sparking is often a burned waveguide cover, damaged cavity paint, or metal in the unit. Stop using it until it has been inspected, since arcing can destroy the magnetron.
Often yes for door switches, diodes, capacitors and fans, and sometimes for a magnetron. If the cavity is rusted or the door is damaged, replacement is usually better. We'll give you an honest recommendation.
The commercial diagnostic is $175–$299 depending on the unit, billed separately and not credited to the repair. The repair itself depends on the part and the model; we quote it in writing before starting, so you can compare it to the price of a new unit.
We don't recommend it. The high-voltage capacitor can hold a lethal charge after unplugging. This work should be done by a technician; leave the cover on and call us.
Yes. After door, latch or seal work we check the oven for microwave leakage, since federal rules (21 CFR 1030.10) limit leakage from an oven to 5 mW/cm² at 5 cm. A door that is bent or won't seal should stay out of service.
Yes. We service Amana Commercial, Menumaster, Panasonic and Sharp commercial microwaves, along with other brands.
Yes. For countertop and over-the-range microwaves at home, see our microwave repair page.
Commercial diagnostic is $175–$299 depending on the equipment; it's billed separately from the repair, and you get a written quote before any repair work.
First visit is card-on-file or COD. Once an account is established, we invoice Net-15 or Net-30 with itemized statements aligned to your accounting cycle. We accept POs from restaurant groups, hotel brands, property management firms, school districts, and city and county accounts. We accept ACH and card payments.
Yes. We service gas and electric cooking equipment, including ranges, fryers, ovens, and combi-ovens.
Yes — we work 7am to 9pm every day, including weekends, with no weekend surcharge. Same-day appointments are available for equipment failures across the Twin Cities metro; call early. We do not offer overnight or holiday dispatch.
A 1-year written parts-and-labor warranty on every commercial repair — the same failure mode, on the same unit, within 12 months is covered at no additional charge. Some sealed-system components carry an extended manufacturer warranty on top; those terms are itemized on the invoice.
Yes. Written estimates are issued before any major-component work. On request we provide inspector-ready documentation: repair scope, part numbers, and the date service restored the unit to spec.
Full Twin Cities metro — Minneapolis (55401–55488), Saint Paul (55101–55155), Bloomington, Edina, Eden Prairie, Maple Grove, Woodbury, Eagan, Plymouth, Minnetonka, Roseville, Burnsville, and the surrounding suburbs — plus Hudson, WI 54016 and Western Wisconsin. Commercial dispatch runs a daily route across the metro.
Related coverage
Who we serve
Commercial Microwave Repair in the Twin Cities covers foodservice, hospitality, healthcare, retail, and institutional accounts across the Twin Cities metro. Multi-location operators get one dispatcher, one COI on file, and Net-15 / Net-30 invoicing.
Service area
We run a daily route across Minneapolis, Saint Paul and the surrounding metro. Pick your city for local details.
Need commercial appliance repair? Call 7am–9pm, every day.