All the buttons on the appliance won't work except for one

sounds like possible magnatron or diode thats the case its not worth repairing. but if your handy then google model nuber and get the part be extreamly careful because of the power capacitor holds extream volts. turn off and allow to sit 15min before working on

Take it back to the place of purchase, the keypad control board is breaking down making this a manufacture defect.

Hi and welcome to FixYa, I am Kelly.

This microwave has a 1 year warranty. You are going to need a new keypad to correct your symptom. Let Sharp pay for it.
http://www.sharpusa.com/~/media/15710197EE3140AD888B896ACDC912DD.ashx
(Choose "open" ) Then go to page 2 for contact information. Page 3 sates Parts and Labor 1 year.

Thanks for choosing FixYa,
Kelly

That sounds like the Magnetron/Invertor has failed and taken out the mains fuse.
The Invertor is not user serviceable.
Call an authorised repair department.

The control panel module is different from the membrane. Unfortunately these modules themselves are usually very expensive, perhaps 1/2 the cost of a new microwave.

Sorry.

Always have something in the microwave before turning on. A glass of water is OK. It's needed to absorbed the energy.
All microwaves will stop if the door is opened. This a safety feature. Never operate with the door opened.
The button below the plug outlet is a test button for the GFI (Ground Fault Interrupter). This is a safety feature of the electrical wiring for your home. Make sure it's turned on.
Since this is a new unit, you may want to take it back to the store you bought from for an exchange/refund.



WARRANTY Parts Warranty Limited 1-year entire appliance Labor Warranty Limited 1-year entire appliance Warranty Notes For models produced on or after January 1, 2006
See written warranty for full details

I have an MVP III Magic Chef microwave for the past twenty years. Every Function on the smartboard works except for the start button. We've been told that the smartboards for this model have been discontinued. I recently tried to find the part online and my search was not successful. Any ideas on how to proceed to get my microwave up and running again...

determined from whirlpool that the f2 display is from the control circuit board. the board's problem is intermittent and needs eventually replacing. not covered by warranty. determined that whirlpool has reduced the warranty for the electronic circuits in its appliances from 5 to 1 year. this is great for consumer confidence in whirlpool. have had trouble with 2 other new whirlpool appliances. probably will not buy another whirlpool appliance.

This may sound crazy but I had one do the same years ago. I cleaned the touch board with glass cleaner and would work fine until got dirty again. Won't hurt to try!