Lg microwave burning smell — not in use

Use only checks that match the exact appliance or system and its official guide.

1. Check 1

   From a safe position, stop using the microwave and hood. Turn off the circuit breaker supplying the unit; unplug it only if there is no smoke, flame, sparking or heat at the plug or receptacle and the plug can be reached without touching a hot or damaged connection. Keep the area clear and do not run either appliance to reproduce the odor.

   Expected result: The odor stops changing after the circuit is isolated, or smoke, flame, active heat, sparking or a rapidly worsening smell is present.

   Next step: For any smoke, flame, active heat or sparking, leave the area and contact local emergency/fire services as appropriate. Otherwise keep the breaker off and continue only with the external, no-touch observations below; do not reconnect for a test.

   Why this matters

   Why: Isolation removes normal appliance power but does not identify whether the source was inside the microwave, the hood/vent path or the electrical connection. Smoke, flame, heat or sparking is an emergency stop-use condition rather than a troubleshooting branch.

2. Check 2

   After the appliance and surrounding surfaces have cooled, note from a distance where the odor is strongest without removing panels or touching the connection: inside the microwave cavity, at the lower vents or grease-filter area, at the cord/plug/outlet/wall, or around the hood and room ventilation path. Do not lean into smoke or reach behind the mounted unit.

   Expected result: The smell is localized to the outlet/plug/wall, to the microwave cavity or vent area, or remains distributed through the hood/room after the microwave circuit is off.

   Next step: Keep the circuit off for an outlet or wall odor and arrange qualified electrical inspection. For a cavity or microwave-vent odor, use LG service without operating the unit. If the odor persists away from the isolated unit, notify building management or a qualified electrician/ventilation professional rather than powering the unit back on to trace it.

   Why this matters

   Why: A concentration at the outlet or wall raises an electrical-connection concern. A concentration at the cavity or microwave vents keeps the appliance in the service scope. A smell that remains after the microwave is isolated does not prove a microwave fault and may involve the hood, duct, shared ventilation or another nearby source.

3. Check 3

   With power still isolated, inspect only visible surfaces: look through the microwave door for scorch marks or melted material, check the visible cord and plug for cracking or heat damage, and look at the accessible hood underside and grease-filter area for heavy residue or visible damage. Do not remove the microwave cover, door, hood assembly, receptacle faceplate or wiring.

   Expected result: There is cavity scorching, melted material, a damaged cord or plug, a loose-looking receptacle, visible smoke residue, or damage around the hood/vent; or all visible surfaces appear normal.

   Next step: Leave the breaker off and arrange LG appliance service for microwave/hood evidence, or qualified electrical service for cord, plug, receptacle or wall evidence. Do not wipe, remove or replace parts while the source is uncertain, and do not power up to see whether the mark or odor returns.

   Why this matters

   Why: Visible cavity damage or continued evidence of arcing is outside a cleaning explanation and requires service. A damaged cord, plug or receptacle needs electrical attention. A dirty or damaged filter area can affect the vent path, but it does not prove that the filter caused a burning electrical odor. Normal-looking surfaces do not clear the appliance because the source may be internal or in the wall/duct.

4. Check 4

   Record the LG model and serial label from an accessible location, the breaker or outlet involved, whether the odor began after cooking or ventilation elsewhere in the building, and the location and appearance of any visible residue. Give those details to LG support, an electrician or building management; do not perform a powered confirmation test.

   Expected result: The model is available and the odor can be tied to the microwave/hood area, or the model is unavailable and the odor is intermittent or not localized.

   Next step: Keep the appliance isolated until the appropriate professional has assessed it. Ask LG for appliance service when the odor is at the unit, an electrician when it is at the outlet or wall, and building management when shared ventilation or another unit may be involved.

   Why this matters

   Why: A model number lets LG match the installed microwave and hood instructions, but it does not make a strong burning odor safe to test. An intermittent or nonlocalized odor remains a source-identification problem and cannot be resolved by guessing a microwave part.