Microwave beeps then SE appears - Samsung SMH9187 Microwave Oven

Constant beep sounds like a bad microprocessor on the main time board. May have to replace the board.

same thing as Samsung - shorted key - google manual

These issues are usally due to a defective touchpad or control board. Troubleshooting would require disconnecting the touchpad ribbon cable from the control board to see if that made the problem go away.

The "se" stands for shorted keypad. Pretty much the keypad on your microwave is fried. There\'s a wide range of ways it could\'ve happened but you have two options. You can either dissemble the microwave and order parts online for a replacment keypad or buy a new microwave.

From page 23 of Service Manual, --SE-- is a membrane keypad error.
Replace control panel.

SE means system error, the keypad has a short in the membrane, or the control board has issues.

SE indicates a short in the keypad membrane, the keypad control board will need to be replaced, a costly venture.

I had the same issue on a 2010 smh9151w samsung microwave after installing it and using it with no problem for 5 days. The second time we unplugged the microwave and turned the circuit breaker off and on we didn't reset the clock on the microwave so the display shows :0 and it has been working for 7 days straight now. Fingers crossed that this is a long term solution. Hope this helps. Thanks!

I have the same problem with my microwave and i cant fix it help?

Sounds as if it may be getting hot look at the back and under the unit there will be a grid of sorts sometimes at the back and//or the bottom or side/s of the machine check to see if this is free of dust etc if not clean and try again remember microwaves can give a nasty bite//please switch off and unplug first..