Touch button won't work - KitchenAid KHMS155L Microwave Oven

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testing every step and fix it. God bless you see the diagram attached

Microwave Buttons Don't Work
Touchpad and Control Panel


If the microwave buttons don't work the touchpad and control panel assembly are probably defective.
Touchpad


If the microwave buttons don't work the touchpad might be at fault. Generally speaking, if the dishwasher display is working and some of the buttons respond correctly but some don't, the problem is with the touchpad.
User Control and Display Board


If the microwave buttons don't work the user control and display board are most likely defective and will need to be replaced. If some of the buttons work and some don't, it is more likely a touch pad problem and the touch pad will need to be replaced.
Main Control Board


If the microwave buttons don't work the main control board is most likely defective and will need to be replaced. If some of the buttons work the touch pad is likely the problem. If none of the buttons work the problem may be in the main control board.

The turntable and the magnetron are two separate items and one should not impact the other. Since the other items are working it is doubtful that the fuse is bad. Also you need to know that the proper way to work on a microwave requires the use of special equipment to check for microwave leakage, it is not recommended to service them yourself.

see this causes and fix it. God bless you
Open Lever If the microwave door won't open the open lever might be broken. This part can be replaced separately.

Door Spring If the microwave door won't open the door spring may have broken. The door spring is located inside the door and keeps downward pressure on the door hook.

Door Latch If the microwave door won't open the door latch might be broken. The door latch is inside the microwave. The door hook, which is part of the door, engages with the latch to keep the door closed during operation. If the door latch or actuator breaks the door may not open.

Door Hook If the microwave door won't open the door hook might not be releasing properly. The door hook is installed inside the door and normally releases when the door is opened. The hook is made of plastic and will break over time. When this happens it will need to be replaced, it can't be repaired.

Button Spring If the microwave door won't open the button spring might be broken internally. The button spring can be replaced.
Button If the microwave door won't open the button might be broken internally. The button can be replaced.

Handle Actuator If the microwave door won't open the handle actuator might be broken. This is a plastic part which can become brittle over time. This part is connected between the door button and the door latch assembly.

SEE THIS CAUSES AND FIX IT. God bless you
Touchpad and Control Panel If the microwave buttons don't work the touchpad and control panel assembly are probably defective.

Touchpad If the microwave buttons don't work the touchpad might be at fault. Generally speaking, if the display is working and some of the buttons respond correctly but some don't, the problem is with the touchpad.
ser Control and Display Board If the microwave buttons don't work the main control board is most likely defective and will need to be replaced.

Main Control Board If the microwave buttons don't work the main control board is most likely defective and will need to be replaced.

Page 3 of the exploded view here shows the door open parts 24510L and 250201 (or 23551B if your full model number is YKCMS135HSS).

What look like part numbers seem to be reference numbers.

For further help you will need to contact Kitchenaid Canada here.

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well pull the plug or go out to your circutbraker/fusebox and finde the fuse for the oven.
then you coud try to open the oven (while its not connected to power!) and try to clean the swiches...

The problem is in the keypad control board, or smart board. I recommend a estimate because cost will be high.

There is no reset other than unplugging the power for a minute then plugging it back in.

If this in under warranty I would contact the manufacturer via the information in your owner's manual for a free repair.

If for some reason you don't still have yours, you can download Kitchenaid / Whirlpool owner's manuals and installation instructions here.

If it's out of warranty, we repair these controllers for $39.95, or you can order an LCD assembly (part number ) from the Pros here or get a refurbished unit from us here.

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

You at least have a faulty "start" switch and probably a faulty door safety interlock switch and maybe a faulty latch. You can remove the cover and start checking the switches with your VOM if you like. Unless you are handy and can do this work yourself, it is probably not economical to have this repaired by a professional. Do not touch the capacitor. this (usually silver) can device is electrically very dangerous.

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