Button panel does not work or it starts making 'pick-pick' noise

It seems like you're experiencing an issue with your Panasonic microwave oven NNT551. If the clock button is not responding and you only see two dots when pressing the stop button, there might be a few things you can try to troubleshoot the problem:

1. Power Cycle the Microwave:
   • Unplug the microwave from the power outlet.
   • Wait for about 30 seconds.
   • Plug it back in and try setting the clock again.
2. Check for Child Lock:
   • Some microwaves have a child lock feature that can prevent certain buttons from functioning. Check your manual to see if your model has this feature and how to disable it.
3. Reset to Default Settings:
   • If there is an option in the manual or settings to reset the microwave to its default settings, try doing that.
4. Inspect for Physical Damage:
   • Ensure there is no physical damage to the control panel or any other part of the microwave that may be affecting its functionality.

New control panel required. Contaminated switches I would think.

To mute your microwave, start by checking the control panel. Look closely. The mute function may be labeled as a secondary function of one of the standard buttons. Check these things first:

• Look for a Sound button. Seriously. It may have been there all along, begging you to press it.
• Press and hold either 1 or 0. Sometimes manufacturers give these keys hidden, secondary functions.
• Press and hold the Stop or Cancel button. Like 1 or 0, this key might have a hidden function when held.

Often, pressing and holding 1, 0, Stop or Cancel will either result in turning off the beeping sounds or activating a child lock feature. (Child lock doesn't actually lock the door, but instead locks the control panel so no buttons can be pressed until the lock is removed by holding the button for around three seconds again.)
If none of these work, it's probably best to consult the manual. Even if you don't have a Sound button, there is no Mute function denoted as a secondary function or holding a button doesn't do anything, there is still a chance a mute function exists. It could be a button combination or, like on some microwaves, be buried in a submenu that's not at all obvious how to activate.

This is from Page 16 in the users manual...

For simple, one-stage cooking, you only need to set the cooking time. The power level is automatically set to High.

If you want to set the power level to any other level, use the Power Level button.
1. Use the number buttons to set a cooking time. You can enter a time from one second to 99 minutes and 99 seconds. To select a time greater than one minute, enter the seconds too. (For example, to set a cooking time of 20 minutes, enter 2, 0, 0, 0.)

2. If you want to set the power level to a level other than High, press the Power Level button, and then use the number buttons to enter the power level.

3. Press the ENTER/START button to begin cooking. If you want to change the power level, press the STOP/ CLEAR button before you press the ENTER/START button, and then enter all the instructions again.

Does it have a start button?

The only way to stop the beeping is to push the cancel button then immediately open the door. This is the only microwave Ive ever encountered that doesn't stop the beeping when you either open the door or push the cancel button. To make it even more irritating, the beeps are VERY loud and long. Here is a short you tube video posted by someone who recorded this loud and long beeping I am referring to. https://youtu.be/pDq7LTpPNTY

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.

mmv5207ba/bc microwave 0 button fan on button does not work all other key pad buttons seem to work

hi my name is mark, you can try pressing the start button and hold it in for about 5 seconds. without make or model it might work. thanks for your question.