MT4155SPB - Instructions

1. Removed exterior cabinet using vice grips to grab the heads of the screws.

2. Removed old broken latch.

3. Snapped the new latch into place. Be careful spreading the two brackets that receive the latch so that they don't break.

4. Re-install exterior.

Note: also had to replace turntable. Removed top cover using secure driver set. Placed microwave on it's front, using a soft towel. Removed edge screws from bottom plate (leaving 4 screws in center attached to heavy transformer). Separated bottom plate from body of microwave (leaving transformer wires still attached) exposing Synchronous motor. Removed two screws holding motor and electrical plug. Swapped new motor in its place. Re-attached bottom plate with its screws. Placed microwave onto it normal position. Re-attached top cover with its secure screws. Installed new turntable inside.

Unplugged appliance. Removed external cover's screw's from the microwave. Unplugged 3 internal plugs for wiring harness to the control panel which houses the door latch. Removed old door latch, carefully snapped new door latch in. Reassembled unit in reverse of dis assembly.

Removed micro bottom - 5 screws. One screw on the motor and a clip. Reversed the sequence, turned it on and watched it turn.

I removed the microwave from its built-in position by removing the faceplace. This was a simple four phillips screw removal. I then removed the microwave and the rear housing. This required the special TORX T20 security star screwdriver. Once the main microwave housing was removed the broken latch was apparent and easily accessible. The longest part of this process was getting the security star driver and ordering the part. It literally took sixty seconds to replace the part. Another three minutes to replace the housing and Another five minutes to put the microwave back in place. This was an easy repair and saved me about $400 in replacement costs.I am very satisfied with the ease of determining the part I needed on the website, the cost of the part, the shipping was timely, and the overall experience by far surpassed my expectations. I am by no means a handy person but the instruction and detail associated with the purchase gave me the confidence and knowledge needed to complete the task.

Remove 2 Philips Head screws on left side of microwave. Remove 3 Philips Head screws from bottom rear of microwave. Remove 4 security screws from back of microwave (holding the cover to frame). These are the security type tips that are like a Torx bit, but need to be hollow in middle to accommodate pin in center of screw. Then back plate of microwave with heavy transformer still attached slides up and away. The wires aren't long enough to allow it to rest flat on the bench, but weight is low so it's easy to hold it upright while removing the motor unit. Separate connector from motor (simple) Remove motor by unscrewing 1 phillips head screw and rotating counter-clockwise a tiny bit. Remove Motor. Reverse steps to re-assemble. Note that there are a series of tabs at the bottom of the back cover that fit into holes in the baseplate of microwave. It can be a little tricky to line them up with the weight of the transformer, but it's not too bad. Once lined up, it drops in nicely and all the various screw holes line up. The microwave is a bad cooker when the plate doesn't spin. This simple and inexpensive fix saved me from having to buy a whole new oven.

Removed the MW from the wall. Took the top screws off the air vent. Then removed the two screws holding on the display. I then moved the display to its side and it revealed the micro switches. I removed the plug in leads from the micro switch one at a time. I did this with all three micro switches only one at a time. I reinstalled everything and plugged it in. No more fans starting when the door is opened.

Take off the cover top and both sides then i saw door latch bracket was broken one side after that I was used screw drivers take off old one out then replace new door latch bracket it very easy

Purchaced special security type srewdriver to gain access to interior of microwwave. Latch is press fitted in roller type receiver. No tool required to remove and replce new latch. Reassembled cover and job completed.

Although the housing cover of the microwave had the "tamper-proof screws" described by earlier commenters, I easily removed them with pliers rather than a special screwdriver. Like others, I found that one of the two hinge posts on the plastic Door Latch Bracket had broken off. The broken bracket could be removed easily, but I had trouble fitting the blade of the replacement part into position until I loosened one more screw on the receiving latch board to allow extra maneuvering room. Only then did both hinge posts fit into their proper mounts and snap in easily.

picked up turntable plate (glass), removed broken part, placed new part
in position and replaced the glass plate.
less than one minute

Unplug microwave! It's NOT necessary to remove microwave from above stove. Removed two Philips head screws on top front of unit to remove front grille. Removed one screw to remove control panel, letting it hang down. Found inline fuse in cabinet where line cord wires come in. Pulled out blown fuse with thumb and forefinger. Snapped in new fuse, replaced control panel and grille with the three screws. Plugged in the microwave. -Worked great! Good opportunity while grille was off to clean it and replace the charcoal filter inside the cabinet.

Initially we started looking to buy a replacement microwave to replace our 13+ year old built-in microwave. It was a real pain finding a replacement to fit the exact dimensions. So I thought I'd try to find an old KitchenAid microwave. However, I was pleasantly surprised when this site came up on my search. Their website allows me to input the problems and then it showed two possible parts that needed to be replaced. I emailed tech support and asked them which part I needed. They responded very quickly and said I needed to replace the magnetron. I watched a couple YouTube videos and then pulled my microwave apart. It was incredibly easy to pull the outer cover off. The magnetron had 5 screws that needed to be removed and one electrical plug. Took me maybe 10 min to complete the entire repair. It was one of the easiest repairs I've done and so thankful for this site They saved me a ton of money from not buying a new microwave and we now have our microwave working again. In hindsight, I wouldn't hesitate. I'd order the Part now and get it fixed.

Lifted out old support put new one in. Fixed in less than 30 sec.

I pulled out the unit. Opened the back by using the special torx driver (bought at Lowe's). Found out that Door latch bracket is broke. Checked the computer and was prompted to the partselect.com. I compared the broken part to their diagram. Ordered the part on a Saturday, it came in on Tuesday. Stick the part to where it belong. Presto. Microwave is working like new again.