Microwave oven mcd11e3w turns on on its own

1. Press the "Cancel" or "Stop" button on the microwave oven to stop the current defrost cycle.
2. Look for a "Defrost" button on the control panel of the microwave oven.
3. Press the "Defrost" button again to turn it off.
4. If your microwave oven has a "Sensor" button, press it and select another cooking function like "Popcorn," "Reheat," or "Beverage."
5. If the above steps don't work, consult the user manual of your microwave oven or contact the manufacturer's customer service for assistance.

Note: Turning off defrost on a sensor microwave oven may vary depending on the model and brand of the appliance.

Safety system locking out the start switch. Door not closed, mode and timer not set etc.

Likely the control panel needs a repair or replacement.

Check the door interlock switches. If one is not contacting properly due to the door being misaligned, realign the door hinges.
Hope that helps.

It ispossible that the secondary transformer has failed which is the feed of the voltage for the processor timer/clock unit. So check this out with a multimeter and you can get to buy the transformer as it is a step down low voltage type., normally mounted on the processor board.
Check also if the fuse has blown if so replace.
I dont think there could be any further damage.
Credit me if this helps.

Since the owner's manual doesn't cover it, you'll have to remove the outer wrapper.

See these files:
http://wwww.microwavedisplay.com/safety.txt
http://wwww.microwavedisplay.com/disassembly.txt

Most bulbs can be matched up at hardware stores, home improvement centers, and places like Wal-Mart or even large grocery stores.

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hi and wellcome to FixYa this is a comon problem with the control unit for the microwave being damaged the buttons start to stop working more or few buttons at a time, there are companys that sell the front units seperate for these microwaves but can cost more than a new microwave itself , the unit itself is damaged by heat from the microwave or on rare accasions damp im sorry there is no other way to sort this apart from a new front control unit or a new microwave

Thanks Hope this helps a little

The Sharp Microwave/Convection oven I have says to touch the Custom Help button, the number "1", then touch the Start Button. To turn off the child lock, press the Stop button.
Or just unplug it, wait 1 minute, and plug in.

You can download GE owner's manuals and installation instructions here.

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

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

You need to trace the power feeding the high voltage transfomer. Because the table doesn't turn, it implies that a door switch or safety interlock is the problem.