Kitchenaid microwave/hood , magnetrons burn out

[QFMaint]

The model # is ; KHMS2050SSS2 . Its about 3 yrs old. The magnetron antenna burned up which smoked the thermo-switch. I replaced both and it burned up again immediately. Anyone have this problem with this model ? The components look different than the usual. The transformer looks to be on a circuit board and I'm not sure where the cap. is . Also can't find any repair manual for it . Send Help ! Thanks

[JWWebster]

Wow this is a different kinda dude ain't it? Looks like it has a Thermx whatever that is. Looks like a limit. Never seen this setup before.