When should I change my waveguide cover?

Replace the waveguide cover if it is burnt, chipped, or cracked. Do not operate a unit with a burnt, chipped, or cracked waveguide cover or without the waveguide cover in place. The waveguide cover can be replaced by an owner.

Typically waveguide is made of brass, copper, silver, aluminum, or any metal that has low bulk resistivity. It is possible to use metals with poor conductivity characteristics, if the interior walls are properly plated. It is even possible to make plastic waveguide!

Common solutions for: Bosch Microwave is sparking or arcing The waveguide cover might be damaged and arcing or burning. If this is the case or if the cover will not stay in place, replace it with a new one. The paint on the interior of the microwave might be chipped.

It is called the waveguide cover. It is usually made of a material called Mica. What does it do ? Its purpose is to cover the aperture through which the microwaves enter the oven cavity from where they are produced by the Magnetron behind the control panel.

If your microwave oven is sparking or ‘arcing’ during cooking it may be that the waveguide cover is damaged. Usually the cover is made of a material called mica. Although strong and tough when new, over a period of time this cover absorbs moisture and food debris and becomes soft or breaks.

Keep the waveguide cover clean to make sure of good microwave performance. Carefully wipe the surface of the cover with a soft damp cloth to remove any food spatters immediately after they occur. Built-up spatters may overheat and cause smoke or possibly catch fire. Do not remove the waveguide cover.

The rapid transition from a non-conducting to a conductive state produces a brief emission of light and a sharp crack or snapping sound. A spark is created when the applied electric field exceeds the dielectric breakdown strength of the intervening medium. For air, the breakdown strength is about 30 kV/cm at sea level.

If your microwave is making arcing, sparking, popping, or other electrical sounds: Popping sounds are usually caused by the food item being cooked in the microwave. Food items with a higher fat content will pop and sizzle as they cook. Covering the container will reduce this.

You can use your microwave without a waveguide, but when the waveguide is damaged, the steam and vaporized food particles collect on the oven’s electronic components. The waveguide’s main function is to protect the oven from steam and vaporized food particles will accumulate on the oven’s inner electronic components.

If your microwave is sparking when it runs, the most likely reason is that there’s metal inside. You may have left your spoon in your coffee or some tin foil on your leftovers. Even a small scrap of steel wool left after cleaning can lead to sparking.

Being an electrical appliance, dealing with high voltages and currents, microwave ovens are sealed and carefully designed devices with high measures of safety. Sometimes, while dealing with a microwave oven, you may get a static shock. These static shocks are a result of poor safety features or negligence on your end.

Over time, uncovered food in the microwave can cause grease and food particles to attach onto the waveguide cover. In some cases, that food can get burned off the waveguide cover and it may appear to be sparking. A solid cleaning could solve this issue.

UNIVERSAL: VINFANY microwave oven waveguide cover is universal for all microwave oven.

Sparking inside microwave is common and does not indicate that your microwave has gone bad. When a microwave sparks most people panic. But this situation is not to panic. It requires you to immediately switch off your microwave and perform the necessary inspection.

“Arcing,” according to the Canadian Food Inspection Agency, usually happens with foods that contain high amounts of minerals, including iron, magnesium, and selenium. Since those minerals act like “tiny pieces of metal,” microwaves bounce off them just like they would a fork, causing the sparking effect.