GE JNM3163RJSS 1.6 cu ft Over-the-Range with Recirculating Vent MECH-ARCING Error Fix: Sparking or Arcing Inside Microwave

Error code MECH-ARCING on the GE JNM3163RJSS 1.6 cu ft Over-the-Range with Recirculating Vent means: Sparking or Arcing Inside Microwave. Visible sparks or arcing occurs inside the microwave during operation — the most common cause is a damaged waveguide cover (mica sheet), which is a thin square/rectangular sheet mounted on the inside wall of the microwave cavity; food splatter can burn onto the waveguide cover causing localized arcing; removal and replacement of the mica sheet is simple and inexpensive ($5-10); other causes include metallic items left inside, peeling interior paint exposing bare metal, or a failing magnetron

The most successful fix is "Test and Replace the Magnetron or Interior Paint Repair" (hard difficulty, ~60 minutes). Estimated DIY cost: $10-$15. HomeMD has 2 community-ranked fixes for this error.

This error is rated medium severity. It should be addressed soon, but your appliance may still function in a limited capacity.

Yes — the top-ranked community fix ("Test and Replace the Magnetron or Interior Paint Repair") is rated hard difficulty and takes about 60 minutes. Tools needed: T20 Torx screwdriver, Multimeter, Needle-nose pliers.

DIY cost: $10-$15. Professional repair typically costs $150-$250. Many homeowners save money by trying the top-ranked community fix first.

The GE JNM3163RJSS 1.6 cu ft Over-the-Range with Recirculating Vent has 8 other known error codes, including: F1 (Oven Cavity Thermistor Open Circuit), F2 (Oven Cavity Thermistor Shorted), F3 (Shorted Key Panel (Stuck Key)), F4 (Humidity Sensor Open Circuit), F6 (Shorted Temperature Probe Circuit), and 3 more.

Error code MECH-ARCING also appears on 8 other GE models: JES1095SMSS 0.9 cu ft Countertop Microwave, JES1145SHSS 1.1 cu ft Countertop with Turntable, JES1460DSBB 1.4 cu ft Countertop Sensor Cook, JES2051SNSS 1.0 cu ft 950W Countertop Microwave with Sensor Cooking, JVM3160RFSS 1.6 cu ft Over-the-Range Microwave, JVM6175SKSS 1.7 cu ft Over-the-Range Microwave Stainless Steel, and 2 more. The fix may vary by model, so check each model's specific page for tailored repair steps.