Question about Sharp R-306LK Microwave Oven

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I press time to cook and timer runs very fast and dings.

I press "clear" and shortly a message reads-"Sharp the best demo"
Everything else works.

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  • 8,820 Answers

The first thing I would suggest is a hard reset. Unplug the unit for a minute or so. Then plug it back in, set the clock and try again.

If that doesn't work, leave it unplugged for maybe an hour. Then let us know if the hard reset does not fix it.

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

Posted on Feb 08, 2009

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My microwave stopped working you can input time but when you push start nothing happens it has power and everything just will not start its like the start button does not work


Possibly a bad door switch behind the holes where the latch hooks go into. Usually with the bad switch the timer counts down but nothing runs. It all depends on which switch is bad. Usually 3 switches inside.

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The microwave could be in "Demo Mode" - Check your owners manual.

In Whirlpool/Kenmore models this is indicated by a lower case "d" on the right side of the display panel.

Most/All function except the magnatron (heat) work in demo mode so you can can learn to use the oven without actually cooking food

To clear "demo mode" press the "kitchen timer" pad and hold for 5 seconds until the "d" clears from the display... you may hear 2 beeps.

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You have the unit in demo mode, Follow instructions in manual to exit demo.

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The scrolling speed for the timed cooking is running incredibly fast - too fast to allow the food to cook. I was looking for a manual for Model #MV-1320B.


The owner's manual can be found here.

It sounds like the oven has been placed in "demo mode".

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

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My Sharp microwave appears not to be working correctly. When I select the time to cook and press start the light comes on and the timer counts down, but it doesn't cook anything. It worked fine yesterday...


It sounds like the magnetron may have either failed or is not being supplied with the extremely high voltage required to run it.

YOUR SAFETY IS PARAMOUNT

This is a job for a professional but if you are safety clued up, here's instruction.
Make sure the !!!!any capacitors are discharged!!!!! before attempting any sort of repair.
Check the door interlock switches first then the high voltage diode with either an AVO model 8 or moving coil meter on high resistance range for short circuit, (DVM's won't show the fault!), the capacitor can fail and go short circuit, the feed fuse on the primary of the high voltage transformer and then finally, the magnetron is best checked by substitution.
Hope that helps.

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try unplugging it for about 15 minutes. if that doesnt work, you might as well get a new one. i fix everything myself for just the cost of parts and i have found that what parts cost for a microwaves, its cheaper just to buy a new one.

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Here is where you can download the manual
http://www.retrevo.com/search/v2/jsp/mytrevo/myTrevo.jsp?page=man

Yes the problem can be undone also.

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The fact that the microwave and convection both do not heat indicated that the oven is in demo mode, check the user manual, otherwise it will possibly be a relay not triggering, may need a pcb replacement, check Demo mode 1st....Phil

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I had the same problem and found that the "demo mode" had been enabled. Turned it off and everything worked fine.

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