All systems appears to be okay. Put in time to cook and then when you push start, nothing. Push cancel, nothing. Wait a minute or so and it go back to Opening Time in display. The start and cancel do not work. However, I can push popcorn, preset 3 minute button, and it will start up and work like it should. I was told by a repairman the "diaphragm" was no good and the cost would be $400 to repair. Any ideas?
SOURCE: display has a f2 code on it. whirlpool oven is model mh1150xm and less than 3 years old.
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.
SOURCE: kenmore over the range microwave 721.67600 will not cook
One of two thing happened here...
1. most likely...One of the interlock switches has malfunctioned. Micro. will NOT opperate unless ALL switches are working properly for safety
2. possible...the start button on the touch pad has failed in the circuit.
SOURCE: Emerson microwave, #MW8119SB, push start button to start cooking
Replace the fuse with a ceramic fuse from Home depot! costs less than $3 and it will fix the problem. I had all the same problems as everyone else, you name it my microwave had it! you must remember replace it with a ceramic fuse! not a glass one. I know people say its the switchboard and all that nonsence but I promise you, the fuse plays a majoe roll in the microwave not working properly. Even though it doesnt look broken, a junky fuse can cause your appliance to do very strange things. I replaced mine 6 months ago and it works like its fresh out of the box.
SOURCE: Tappan TMV151FS over range microwave starts to work and then dies
Never run the microwave without a load (something to heat)!!! That kills the microwave generating parts.
Sounds like a 'thermal' protect switch is activating after running. Make sure that (if the unit is mounted in a cabinet) that there is sufficient space around the unit for proper air flow and that nothing is blocking the vents. Try setting it on a counter top and heat something. If it works properly and doesn't shut off, the venting space is the problem. You may have to have the cabinet that it sits in redesigned for more clearance.
SOURCE: kitchenaid microwave model KBMC140HSS03 will not
Your membrane keypad is shorting.
It comes as an assembly, so it's pretty easy to replace yourself. It is part number 4453420 and you can get it here for $235.33 plus shipping.
You can also find helpful exploded views at that link.
The picture below shows you how to unlock a typical membrane keypad connector.
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