Have you noticed sparks in your microwave? You may have a damaged or corroded wave guide cover. This cover is a metallic sheet that guides the waves to the inside of the microwave to cook your food. Replace it with this genuine spare from Sharp to ensure your microwave performs its best.
Genuine spare part for select Sharp microwaves. Prior to ordering, please check the list of appliances to ensure this is the right part for you.
How to replace a waveguide cover
This video should help with fitting this part. However, the exact layout and fitting technique may differ for your make and model.
Be safe - always unplug any appliance from the electricity supply before carrying out any work on it.
If you are in any doubt contact a qualified repairer.
It fits either way round and should not matter. The mica is there as a protection only from food getting into the microwave vent. Slide one end in and carefully bend the mica at its center to allow the other slot to fit under the metal tab.
Microwaves do not flow down wires, but are guided through a metal duct from the megatron into the microwave oven cavity. To prevent foreign objects from entering the waveguide, a cover needs to be fitted. This has to be transparent to the microwaves but also strong enough to prevent it collapsing under use. A wave guide is made up of mica layers