| Symptom | Likely cause | Quick check before you call |
|---|---|---|
| Runs but doesn’t heat | High-voltage components | Don’t open the case — capacitors hold a dangerous charge |
| Dead display | Door switch, fuse, board | Check the outlet and breaker |
| Turntable not spinning | Turntable motor or coupler | Reseat the roller ring |
| Vent fan or light not working | Fan motor, bulb, board | Replace the bulb first |
| Sparking | Damaged waveguide cover, metal object | Stop using it immediately |
Over-the-range and built-in microwaves cost far more to replace once installation and venting are included, so repairs usually make sense. A countertop model under about $200 usually doesn’t.
Usually yes, because replacement includes mounting, venting and installation costs.
Usually a failed high-voltage component. These need a technician because of stored high voltage.
Tell us the appliance, brand and symptom. We’ll reply with a two-hour window and a typical price range.