Cooker And Oven Forum

[julietitulie]

I have a De Dietrich combination microwave oven which developed a loud noise and sparking from behind the upper wave guide. I heard this can be due to poor cleaning but this is not the case as the oven is used and cleaned daily. I replaced both guides and the sparking has stopped but the oven has a loud "grinding" noise and will not heat or cook, any suggestions?

[microgerry]

Possibly the arcing has damaged the magnetron which lives behind the waveguide cover. Get it into a microwave specialist to diagnose it properly