Not heating / no power to heat Microwave runs but food doesn’t heat | $150–$320 + magnetron or diode | Magnetron failure (most expensive part), high-voltage diode, high-voltage capacitor. Requires capacitor discharge before diagnosis. Parts quoted separately. |
Magnetron failure HIGH VOLTAGE Complete loss of heating, arcing, burning smell | $180–$360 + magnetron (expensive) | Magnetron replacement — the primary heating component. High-voltage component requiring full capacitor discharge and safety procedure. We advise on repair vs. replace economics for countertop units before ordering. |
Door not closing / latch failure Door won’t latch, unit won’t start, door bouncing open | $100–$220 + latch assembly | Door latch assembly, door switches (safety interlock). Most common microwave repair — straightforward on all unit types. |
Completely dead / no power No display, no response, nothing when plugged in | $100–$240 + fuse or board if needed | Ceramic fuse (most common, inexpensive), line fuse, thermal cutoff, main control board. Fuse replacements are quick; board replacements require repair vs. replace assessment on countertop units. |
Sparking / arcing inside Visible sparks, burning smell, scorch marks on interior | $120–$260 + waveguide cover or paint | Waveguide cover replacement or cleaning (grease buildup causing arcing), mica plate replacement, interior cavity assessment. Do not continue using a sparking microwave. |
Turntable not rotating Plate doesn’t spin during operation | $100–$200 + motor or coupling | Turntable motor, coupling or drive bushing, turntable ring and roller assembly. Often the simplest microwave repair. |
Display failure / control panel unresponsive Blank display, buttons not responding, error codes | $150–$300 + control board | Control board, touchpad membrane, display board. On premium brands the control board alone can be expensive — quoted separately after diagnosis. |
Light bulb / interior light out Interior light not working during operation | $100–$160 + bulb or socket | Light bulb, socket, wiring. Simplest microwave repair. On OTR units, light may also serve as cooktop illumination. |
Over-the-range fan / vent not working OTR Exhaust fan not running, venting not working | $150–$300 + fan motor or switch | Exhaust fan motor, fan switch, grease filter assessment. OTR-specific — the range hood function of the unit. |
Over-the-range mounting / installation OTR Unit loose, mounting bracket failed | $150–$280 + hardware if needed | Mounting bracket repair, wall anchor assessment. Includes full remount and confirmation of secure installation. |
Miele / Bosch / Sharp built-in LUXURY Built-in and drawer microwave repairs | $250–$480+ + OEM parts | European-sourced OEM components, integrated trim kit systems, drawer mechanism repairs. Higher labor for built-in cabinetry access. |
Diagnostic fee Service call + full diagnosis · high-voltage safety assessment | $89 Applied to repair | Applied to labor total when you approve. Includes high-voltage capacitor discharge and safety assessment before internal diagnosis. |