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Usually, there are 2 or 3 screws on the top of the microwave that hold it up to the bottom of your cabinet. Have someone hold the microwave while you remove those screws. Then allow the microwave tip down about 20?, then you can lift it off the bracket on the back-bottom of the microwave, and remove it. NOTE: On some older microwave ovens, there is a lever or latch behind the grill vent that you need to pull to allow it to tip down. And on a few (very few) microwave ovens, there are 2 support arms that the microwave will slide out on, instead of tipping down.
Possible causes - door switch, or door switch assembly out of adjustment; plastic latch guides on door switches worn; door hinge worn, causing door to be out of alignment. If it's the last one, the unit needs to be checked for microwave radiation.
You have a broken the door latch.Most people have the habit of slamming the door shut ( the same way some people hit the enter button on the computer ).With age the plastic becomes brittle and the slamming accelerates its demise.
Now connected to this latch is a safety feature which shuts down the Microwave when the door is opened during cooking. So till you replace this latch the microwave will not work.
Disconnect the microwave from the power outlet and remove the top cover ( 4 to 5 screws at the back ) , look near the bottom close to the DOOR OPEN button.You will see the rest of the latch with a spring attached to it.Do not attempt to glue the broken piece because the force exerted on the latch is very high and will not hold. You challenge is getting a replacement. Best would be to contact the seller or locate a authorized service center from where you might be able to procure it. It should cost you about 5$.
I had this problem. The spring inside the door which pushes the the latches down had broken (plastic peg had broken off).
I managed to fix it by attaching the broken end of the spring to the door frame using a small nylon cable tie using the small hole in the plastic fingers which was already there. Note you need to remove the inside door surround.
See the following link to remove the plastic cover on the door
IMHO this is an expensive microwave and it is pretty poor that the door
mechanism is so weak considering that it gets constant stress from
opeing and closing the door and especially since the part that breaks is
integral to the expensive control panel. I have the same problem with my microwave after only 2 1/2 years of use. After some fiddling I got it apart as follows. Remove the three screws that hold on the top grille (above the door) on and lift off the grille. Turn off the power to the microwave at the switch panel. Remove the two screws above the control display that are now visible after removing the top grille. Do NOT pry this panel off, slide it upwards to unlatch the hooks and lift it off carefully. There are a lot of wires which you will have to unplug (note their locations although none of the plugs are interchangeable) and separate the panel from the microwave. You can now check the latch itself and open the door by putting your finger under the lift latch and genly pushing upwards. If the door won't open the problem is in the latch mechanism which can be removed by taking out the two screws on the inside of the case an unplugging the many wires (note locations, a couple of them can be plugged back in the same place). If the problem is the same as the one I had it is in the actualy release button assembly where one of the brackets are broken. You will either have to replace the whole display & control panel or glue the bracket back together. I'm in the process of trying to glue it with epoxy but I can't vouch for how reliable the repair will be. Remove the screws that secure the control panel metal reinforcement and unplug the flat cable then remove it carefully. If either of the plasting pivot brackets moves it is broken. With the metal plate removed the problem should be obvious.
this maybe the spring in the door has fallen off is the latch head very loose in the door if it is it maybe the hook on the bottom of the latch head has broken off, to get to the latch you need to pry the inner door trim off as u do this you will need to lift the the latch head up the trim is only cliped in so if you start in between the 2 hooks of the latch then work your way round the door you should be ok when you are inside the latch then have a look and see if the spring is still in place and not fallen off or loose if it has fallen off look at the bottom of the latch you should see a small hook at the end if this is miss then you need the latch please unplug the unit before you undertake any work on an appliance hope this helps
I'm assuming your correct model number is KCMS145JSS?
You have a broken "release lever", part number AP3033332.
It's reference number 7 on the exploded view diagram found here:
You can order it by part number from Appliance Parts Pros here: http://tinyurl.com/gv383
If needed, you can download the owner's manual and installation guide here:
If you need further help, please follow up.
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