Press the microwave to start or any other buttons it beeps three times and does nothing the clock still works it is a KitchenAid microwave convectio it is a KitchenAid microwave convection combo

can you say,,,buy a new one???

Usually push click button than set time and push click button again (some will have you push the "start" button)

common problem with lots of MWs - the door switches are not set and secured properly. Now they are totally off. Need to pull apart and reset. Not a task for an average homeowner. Mine (Whirlpool) did that 1 week after I got it - exchanged for a new one.

If the clock is not set, nothing will work as the controls require the time to be working. Press Clear/stop twice and press clock, set time and press clock again.
Hope this helps.

Operating functions:
To set the clock, press and hold the clock/timer button for three seconds. A clock icon will appear on the left side of the screen. Input the time using the numerical buttons and then click the clock/timer button to save the time.
To set the timer, press and release the clock/timer button so that the display shows all zeroes. Enter the desired time using the keypad. Press start/stop to start the countdown. The countdown may be paused by pressing the stop/start button and resumed by pressing the same button again.
When countdown is complete, timer will beep continuously for thirty seconds and display will flash. Timer will then beep every ten seconds for ten minutes until the stop/start button is pressed.
This timer will also time up to time activities. To start count up, press clear/memory so timer reads all zeroes. Press stop/start and a plus sign will appear on the right side of the screen as the timer begins counting up.

Just replaced the touchpad in my microwave and the problem is solved. Evidently, the buttons where out over time.

I have the same problem with my microwave, the clock disappears and it says "enter" and "amt", I figured out it's the "beverage" button that is sticking. When I want to use it I just press "beverage" and then "reset" and just press them over and over until it stops. Usually it's on the first try, sometimes I have to press them a few times. Just don't do what I'm about to type though, I decided to get my razor knife and cut the button out carefully, I only cut the contacts on each side of the button, now no buttons work, I should have left it the way it was, at least I could use it that way.

Yes this is a touchpad issue. As you have noted the crisp button is stuck and this is the cause of this. You can try removing the keypad and push up the pressed button. If its jammed then replacing it is the only way.

The service man just left it was the 20 amp line fuse. Have one on order.

Yes. The time base is important.

You could unplug it and try it again, but it may not work.

Another model's manual says, "a 120 Volt, 60 Hz,
AC only, 15- or 20-amp fused electrical supply (or circuit breaker)
is required."

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