My Sanyo microwave model EMD993 just stopped working completely. Any suggestions as to what might be the problem? Has this model got an internal fuse? If so where do I find it?

Sanyo EM-P672W Microwave Oven Repair Questions ...

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Sanyo EM-P672W Microwave Oven Sanyo microwave fuse ...

has an internal fuse. but you need to find out why it has blown, has it been making any funny sounds while cooking. ??

see the informaton with carefully and use the common sense:
God bless you
When the microwave sounds okay, but there's no heat, one of the internal door switches, the high voltage circuitry, or the circuit board may have a problem.

You said you replaced the fuse. what about the mag or cavity thermal protectors?? They are fuses too and can make it dead if they open.

Well if you are lucky it is an internal fuse. Open it up and look somewhere near where the cord comes into the unit. If it is not the fuse then I suggest you replace the whole thing.
I recently was attempting to repair one. The part cost $93, a new microwave costs that or less.

try replacing the fuse.there might just be a voltage fluctuation in your locality

there are several internal fuses protecting different circuits, as long as you get a direct replacement you will be ok

It's probably the thermostat / thermal cutout (TCO) mounted on the magnetron or the cavity.

Be sure the end caps of the fuse are not loose. That can fool you.

You can usually find helpful exploded view diagrams and order parts by entering your full model number here.

There should also be a "mini-manual" hidden inside the unit behind the control panel or hidden on the left side behind the grille, which is very helpful when troubleshooting & testing.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

Does the inside light come on when the door is opened?

If not, then I'd say the internal fuse or thermal cutout / thermostat has failed.

A microwave can be dead for many reasons.

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

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.

When checking thermostats, if it has a hood fan thermostat, that should read open, as opposed to the others, which should read closed.

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

You should do a continuity test on the fuse while it's in the holder (with the microwave unplugged, of course) then turn the fuse by hand or take it out and put it back in, then test it again.

If you remove the fuse, then press the meter leads against the ends, it can allow internal contact to be made and make a bad fuse appear to be good.

If you or someone you know decide to look into it, we have critical safety information and disassembly information at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

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