Microwave was dead and no power. Open the control panel and found the fuse (125v 20amp) burnt. Replaced with 250V 20amp fuse. Control panel lite and microwave works, opened nd microwave door, fuse burnt. replaced with another fuse this time spark came above conrol panel behind grill. Fuse seems OK, microwave is dead. How can you help us
Bad door switches normally don't cause fuses to fail. Typically there's 2 of them wired in series with each other so if one of those switches fail to turn off power the other one will when the door is opened.
There are a number of components that can cause a fuse to open; HV diodes, capacitors and fans, to name the most common culprits, and require the knowledge and safe use of a volt-ohm meter to efficiently find the problem.
The original problem, was probably caused by a bad door switch along with the fuse, now there is a good chance the control panel is damaged, you will need a professional to assess if the item is worth fixing.
No, people looking for help, do not need insults.
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SOURCE: Dead Microwave
Check your plug and change the fuse there also.
You might need to rechange the 20 amp 250v fuse behind the control panel again due to the recent spark.
If none of this works then i'm afraid a certified technician needs to check the power packs and boards
SOURCE: Yesterday, my sharp carousel r-1460 went dead. I
If the 20A fuse is blowing, it is often the high voltage transformer or magnetron. If this is the case, and the microwave is not under warranty, replace it. Residential microwaves are generally considered disposable. Parts and labor are just too expensive. A magntron or transformer can cost more that half the cost of a new microwave.
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