SMH9151WE Samsung Microwave

Initially I called a Samsung recommended appliance repair outfit to fix the latch. The technician informed me that he does not fix latches. I need to buy a full new door for the microwave for $215 plus he charges $165 to come to my house. I got angry and did some research and it turned out that this is a very common problem. I ordered par ... Read more t PS4229162 "door key" $6.67 then followed the instructions on a youtube video by zimsjeep
"Repair a Broken Microwave Door Latch" to install. At first I struggled a bit hooking up the spring to the frame, but then I used a slim plier to hold the spring (instead of my fingers) and that did the trick.

Removed control panel, discharged HV capacitor. Removed old diode, tested to confirm failure. Replaced part. Other than the removal of the panel swapping the part was almost as easy as replacing a light bulb.

Take a decent putty knife or your handy kitchen spatular. Open microwave door and out the outside edge of the dark plastic trim panel, insert the spatula or putty knife and gently pop the panel loose from the small retaining clips. You must do this from the outside edge as that is where the trim panel will release from. Remove the trim ... Read more panel. Using a flashlight, inspect the metal door frame and find the two Phillips screws holding on the door handle. Unscrew and remove door handle. Lift up on the door latch mechanism, its black plastic and has two legs that slide into the door frame. Between the two plastic poles (legs) you will find the spring, unhook if not broken from the middle of the plastic bracket. You will notice that the metal door frame has three holes. The top and bottom are for the latch mechanism to slide through. The middle is for the spring to latch into (rear or side closest to outside of the door), with the round area which is open, is there for the spring to slide into. Manually slide the door latch up and down. Replace the screws for the door handle if not already done. And reinstall the black plastic inside door trim panel gently pushing into place so that the mounting tabs click into place. Tell your wife you spent all day doing it (its about a 20 minute job) and that you saved thousands of dollars :). Insert popcorn and turn on a movie.