June 7th, 2005, 08:22 AM
I have a Kenmore built-in (over-the-stove) microwave oven, Model No. 721.8935090 that is about 14 years old. About a year ago it quit working, and after some investigation, I found the ceramic fuse - after replacing it, all was well for a while.
Then, a few days ago, the fuse blew again. I replaced it, and got a minute or two into a cooking cycle - I opened the door to check on what I was cooking, shut the door, and the fuse blew again.
I have always heard that if the same fuse keeps blowing, you have a more serious problem, but I wanted to make sure before I either take the thing somewhere to have it checked further, or trash it and buy a new one.
I think I read on here somewhere that slamming the door to the oven could make the fuse blow - I didn't slam it THAT hard (the wife and kids do it much harder), but I guess you could consider it slamming.
Any suggestions on what step(s) to take next?
June 7th, 2005, 08:54 AM
Sorry, but should this question be posted elsewhere?
Yes, i will move it to the Microwave Repair Talk Forum.
June 7th, 2005, 10:54 AM
Blowing the internal fuse when open or closing the door is often a sign of a bad/weak/intermittant door switch....sometimes can be the mechanism that pushes/operates the door switches as well.
2 switches open and one closes when the door is opened, two close and one opens when the door is opened...if one sticks the short switch can/will blow the fuse.
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