Between 1st and 2nd use the oven stopped working. No power

The possible reasons are: 1) The high voltage transformer is broken, 2) The magnetron is broken.

For the 1st problem, no power can be applied to the turntable.
For the 2nd problem, the magnetron is broken with no microwave can be issued.

2 things... the little microswitch can be open...
there should be three one is open Your door latches go into/betweem them.
.on the print it would be called the monitor..
replace that should work !
OR ...
yuo could have a open thermal cut out... them are located on the magnetron and on the oven cavity, they will look like these are microswitchs
just hook the new wire to same pins the one in the mico may ony have 2 use those same two on the new switck forget about the extra pin in.... you will see
a diagram on the side just do the new the same way N.O. or N.C...take your time .... please and pull the plug 1st

We have a Samsung SMH9187ST that just shuts off. no power at all. this is the 2nd time it happened, this time my husband was home to witness. First time I somehow got it to start working again , this time no luck. it was manufactured Dec 2009

Hi,

Here is a tip that will help you to figure out what is wrong with your Microwave Oven....

Basic Microwave Oven Troubleshooting Tips

heatman101

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replace the motor located , down the plate,

1st-take out the plate out the microwave
2nd-face up the down side of the microwave
3rt-remove the three screw or cut metal at 120degree you will see these points.
4- disconect the two cables connected to the motor
5-remove the two screw to extract the motor and go to a near shop to buy it. have a good luck.

there are 3 things that can be wrong 1st the stepping motor under the plate could be broken the motor is made up of lots of plastic gears to get to it you will have to turn the unit on its side so you the bottom of the unit remember to take the plate out 1st in the middle of the base of the unit you will see a panel where the motor is this needs to be cut out to gain access to the motor this will have 1 screw holding the motor in place 2nd and while you have the motor out you need to look at the coupling thats the part that the plate sits on as you remove the motor it will fall inside the oven pick it up and look to see if it has a split in the side as when the motor turns if the coupling has a split in it the motor wil just turn inside it 3rd the motor may not be getting any power from the pcb but u will need a test meter for this so try 1 and 2 thn if tht doesnt work it will need to go into a shop

you may have gotten a power surge and that can cause some funny things to happen, 1st is there power to the oven, 2nd if so there may be an internal fuse protector built in to the oven, check with the manual for anything of that sort listed. if not you may have to take it in and have it repaired by a pro. there is a lot of voltage in these ovens and unless you know what you are doing a person could get hurt

If everything works, light and micro heating.. then I have 4 possibles for you to check... 1st make sure you don't have a button that allow you to turn the turntable on/off... 2nd take the glass table out and check the center plastic spinner(pull it out) and see if its broken. 3rd your turntable motor is bad, and 4th the relay for your turntable on control board is bad... helpfully that will do it for ya.. good luck.. mike

I would return the unit and get a different model or brand if possible.

Did someone spray cleaner directly on it, especially around the keypad area??

The first thing to try is a "hard reset". Unplug it from the power line for a few minutes, plug it back in, set the clock, then try again.

If not, then you might leave the door open overnight and see if that helps it dry out, then try the rest again and try cooking again.

Otherwise, please write back with your brand and model number if you need further help.

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