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i just got done looking over the tech sheet off your model and there no error code SE so i believe that its the main control board hope this helps
Your answer was of no help, but thanks anyway.
From Samsung FAQ:"Some models are equipped with a sensor that can automatically adjust the oven's heating time based on the amount of steam in the oven. If your microwave is displaying E1, E4, or E5, there may be an issue with the gas sensor. For an E1 error, press the Cancel button and check on the food.Other microwaves do not give specific error messages and just display "8888" on the LED. If you get this error message, your microwave needs service.If the message is either ERROR or E-6, it indicates a mechanical fault.For all error indications, including the SE or 5E error, try unplugging the microwave from the outlet for at least ten minutes and then plug it back in. If the error persists, the microwave may require service. Please use our ASC Locater to find your nearest Authorzied Service Center."
SENSOR TEST (QUICK TEST)
1. With 2 fingers touch and hold the following pads at the same time :
2. Observe diagnostic number in display (Numbers approximate)
ex) 33 (Vs) 39 (Vout)
? Vout Vaule : 10~150 (Normal-verify with "detection test" )
? Over 150 or Less than 10 (Sensor failed. Check connection of Sensor.)
Sensor Error Code.
E61 - Open error. Sensor unpluged, wiring or smart board
E62 - Short error. Shorted sensor or smart board
this is out of your tech sheet hard to figure out with out the number codes
Which 2 pads am I suppose to push?
Press the ‘pause/cancel'pad, sorry about that having problems with server
http://servicematters.com/maytag_library/docs/SAM0091.pdf here go here this will show where everything is be carefull ok good luck and remember if your gonna do this yourself to discharge the capacitor first it holds 5000 volts thanks
Here are the only things I could get using the pause/cancel button.
If I hold the pause/cancel button and the start button I get SMH7178 050717A.
If I hold the pause/cancel for 8 seconds I get the SE code! Note SE could be 5E code.
I think I just figured out what's happening! People complain that The "SE" code usually happens in the middle of the night. It gets colder in the middle of the night and the keypad membrane in probaly contracting and putting pressure on the pause/cancel button for more than 8 seconds. That's my theory