Think my fuse blowed

Because of the loud snap you are hearing, my guess is you have something shorting out in the high voltage section of the microwave. I'm surprised it is not blowing the internal microwave fuse yet. Average repair cost depending of what part it going bad is approximately $150 to $200. Considering the age of your micro my suggestion is put the money towards a new one.

The low voltage brownout let the oven draw too much current, and likely an internal fuse failed. Typically after removing a dozen Philips screws you can take off the cover and locate the fuse, which you can match and replace. [If it still has "power" (like the lights come on) but has stopped heating, then it could be any number of other issues (main capacitor fail, etc)] I've changed a fuse or two in my day, and years ago a failed capacitor, with success.

I own the same microwave. There is a small in-line fuse behind the control panel. You can get it at any hardware store.

You might have blow the internal fuse. If you are hand enough you can take the top cover off and follow the incoming power cord. Before the huge transformer there will be a fuse.
YOU MUST DISCONNECT POWER AS PART OF ELECTRICAL SAFETY.

if anything like my own it is the led blub thats blowen - major hasel to change out - get some one who knows these cookers/ovens...

The power spike would have taken out the "monitor" fuse inside the microwave. This fuse protects the oven from door switch failure, if the switches fail it will blow this fuse so the oven can't be used. The purpose of this circuit is so that you can't run the microwave with the door open. This fuse is normally a low amp quick blow which is why it is susceptible to power spikes. This fuse can be replace but must be changed like for like, and is advisable to change the door switches as well. Good luck.

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

Usually, when your microwave oven doesn't work it all, the internal fuse (thermal fuse) is blown. This fuse protects both you and the oven. When it blows, you need to have a qualified appliance repair technician replace it.

The reason for this is that if you do not have any experience and training with microwaves, you can get a SEVERE shock, even if the oven is unplugged. THAT being said, if you still want to know where the fuse is get back to me. good luck.

ALSO, as you may know, a small microwave these days is under fifty bucks at walmart.

If you or a friend decide to work on it, we have *critical* safety, disassembly, and troubleshooting info at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

A microwave can be dead for many reasons.

If it goes dead for a while during or after cooking then comes back on, the magnetron is probably overheating and causing the magnetron thermostat to open. Then when it cools, it closes the circuit and allows power through again.

If it's intermittent or random, it may be a bad connection, usually on the control board or a loose fuse holder.

If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.

If it went dead a few seconds after pressing the Start pad, that's usually a failing high-voltage transformer.

If it goes dead or blows the breaker when you plug it in or open or close the door, then there's a problem with a door switch or door switch mount.

If the fuse is good, it may be an open thermostat or thermal cutout on or near the magnetron or on top of the cavity / body of the oven.

We're happy to help and we appreciate your thoughtful rating of our answer.

If the stove was on without the hood fan's being on, it could have put too much heat in the "innards" of the microwave. It may have opened the thermostat or thermal fuse located inside - either on the chassis of the microwave or or the magnetron. It will look something like the one in the attached photo. For helpful exploded view diagrams and to order any needed parts, you can visit the GE parts Web site or the Sears parts Web site at http://www.geappliances.com/shop/prts/ or http://www3.sears.com/ (the 3 is correct) In my profile, you can find a link to my site, where you can find critical safety & disassembly tips. Post back if you need more help.