Repair and disassembly guides for microwave ovens.

503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

この質問は役に立ちましたか?

スコア 0
コメントを追加

Free shipping on all orders over $100 or containing a Pro Tech Toolkit!

当社のショップを閲覧する

1回答

最も参考になった回答

mrchief,

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

この回答は役に立ちましたか?

スコア 1
コメントを追加

回答を追加する

mrchief さん、ありがとうございました!
統計データを表示:

過去 24時間: 3

過去 7 日: 5

過去 30 日: 11

今までの合計 204