Repair and disassembly guides for microwave ovens.

491の回答 すべて表示

Capacitor keeps failing, Whirpool microwave doesn't heat

I have changed the capacitor 2 times but after a few days of heating, the microwave stops heating.

Any idea what could be going wrong? The diode tested fine. And if I put a new capacitor, it works for few days - so I guess that rules out Magnetron and other switches n stuff. So a faulty circuit board probably?

Has anyone had this problem?

この質問に回答する 同じ問題があります


スコア 0




Just because it works again after a capacitor replacement does not mean the magnetron isn't failing. It could possibly be that the magnetron is burned out bad enough that you are over-driving the capacitor to blow out.

There should be more than one cap in the power circuit for the magnetron driver circuit. It's a turned circuit, so check out an iductor loops in there as well for visible damage to their insulations.

Even with a schematic and some thorough circuit testing, finding an impedance/reactance mismatch would be pretty difficult. Your hint might be that the cap is either getting overvolted, or draw much too much current.

Hope that helps, best of luck


スコア 1


mrchief さん、ありがとうございました!

過去 24時間: 0

過去 7 日: 4

過去 30 日: 13

今までの合計 185