Why does microwave type change the repair-or-replace math so much?
A basic countertop microwave costs $70–$150 new, so a $120 repair almost never makes sense. An over-the-range built-in model, by contrast, costs $300–$700 to replace once you factor in venting and cabinet-matched trim, which is why repair is usually worth it there even at $150–$250.
What's the most common built-in microwave repair?
A failed door switch or a worn turntable motor — both inexpensive, generally under $150 installed, and don't reflect a bigger problem with the unit.
Is a microwave that sparks dangerous?
Yes — stop using it immediately and don't run it again until it's inspected. Sparking is most often caused by a damaged waveguide cover or metal debris inside, both fixable, but it needs to be addressed before another use.
Does a microwave that runs but doesn't heat mean the magnetron failed?
Often, yes, and that's typically the point where we recommend replacement on a countertop unit, since the magnetron alone can cost close to what a new microwave runs.
How long should a built-in microwave last?
8–10 years is typical, sometimes longer with light use. NJ's humid summers can accelerate wear on the door seal and ventilation fan on models installed without adequate airflow clearance.
Call (973) 718-9373 for microwave diagnostics — we'll give you a straight repair-vs-replace answer on the visit.