Mica sheet / waveguide cover for microwave oven
Your microwave oven has a Mica sheet / waveguide cover problem ?
The part is broken and the appliances doesnt work?A mica plate is present in each microwave oven. Its role is to filter out magnetic waves.
Over time and due to the grease that accumulates on this plate, it can tear.
Sparks when starting up are a sign that this mica plate is damaged and it must be replaced.