LMV1314B (AB1ELGA) LG Microwave Oven Combo - Instructions

Unplug the unit before servicing. Need phillips screwdriver. Open door. Use step ladder to access and remove 2 small screws from top of the room air diffuser at top of unit. Slide diffuser slightly to the left to align the diffuser's plastic tab on the left side to rotate toward you. (The wires for the front control panel are at the far left side of this difuser, but difuser is slotted for easy removal). Once the difuser is removed you will see 1 screw at the top that secures the pannel cover on the left side of the unit. Remove screw and slide this panel slightly up and out. This exposes the plastic frame that holds the upper and lower door switches. To locate the door switches and observe how they work, close and open the door and watch the door (bayonets) open and close the micro switches. Do the (red) buttons on top of the switches move up and down when the door bayonets push and release? If the buttons do not "pop" up when opened the switch is defective. The switch frame is secured with 2 screws. Remove screws and rotate the unit out for easy access to the micro switch(s). The internal (spring?) on my unit that is suposed to allow the red (visible) button on top of the switch to "pop" up when the door is opened was broken. Carefully pry the switch outward while being careful to lift the plastic holder-piece that holds the switch in place. Be careful, there is a small pin on the frame, so rotate the switch OUT toward you while lifting (carefully) the plastic holder-piece (you will see it on top of the switch). You can use an ohm meter to test the continuity of the switches. But if the buttons don't "pop" they are defective. Replace switch and reassemble.

Watched a couple of repair videos on Youtube by searching for the model number. Found out what to do in order not to get shocked by the powerful capacitor.
Ordered the two switches (To be sure, I could have ordered a third switch as suggested in the videos.)
Bought a tamper-proof star bit to get the cover off. Followed the directions to replace the switches. - I broke the harness and had to use some super glue, but it's all good. I should have removed the harness instead of trying to get a switch out while it was still in place.
It's all back together, and the wife is happy!!

Removed each switch (3) and checked them with multi-meter; got intermittent readings on two of the three. Also broke of a piece of the frame that holds the switches trying to remove them (old, exposed to heat and moisture over the years caused the plastic to become brittle and the wiring connectors were also hard to disconnect probably because of heat and moisture over the years).
Went to PartSelect web site and discovered the three switches and frame were bundled in to one part number, 43501A. So, I called and spoke with a very knowledgeable technician and she explained why plus helped me order the part over the phone. When I received the part, the switches were already mounted in the frame and the frame was modified compared to the OEM frame. As I began to remove the old frame, I discovered why the new frame was modified. It was as if PartSelect had done many of these door interlock repairs and they knew exactly where and how to modify the frame and communicated this with the manufacturer, because the new frame installation was very easy, there was nothing hard about installing the new frame with the switches already in place. I then reconnected the wiring to the switches and tested the microwave and it works fine now, Problem solved, Thanks PartSelect.com

Replaced entire door latch assembly with the three micro switches. Easier to replace entire latch assembly as individual switches do not remove easily from latch assembly. Had trouble removing front panel assembly. Parts ordered solved this problem.

Removed some cosmetic panels. Removed the assembly with micro switches. Examined the faulty switch by checking the clicking action of switch. Two others were ok by this method. Replaced the switch with new one. Works fine so far. Thanks to web site and YouTube videos.

Part select made it very easy for me to purchase a replacement plate, which I didn’t think I was going to be able to find so thank you part select for having what I needed

I went to LG website enter model number and was given a list of parts that need to be replaced with a percentage of which part fails the most. I order micro switch PS3522738 which arrived and PS3529293 was backordered. I installed the one that arrived. The microwave worked briefly. I reordered and waited for both switches to arrive and installed both. The microwave still doesn't work.

your part and YouTube video (which just happened to be my microwave)
changed bottom microswitch...done and dusted in 20 minutes...your $14 part 3B73362F saved $350!!!

Take cover off microwave. Check door switches to determine which one was faulty.Remove and replace faulty switch.

Wanted to see the instructions before I install it.

i unplugged the unit,unscrewed the outer shell so that all the wiring and internal components were visible.starting at the first of three micro switches i removed the slip on terminals installed the alligator clips too the wires so the switch would now be bypassed.i made sure the wires and clips were not touching anything plugged unit in and it worked.i then installed the new switch and closed up the outer shell

very simple

Partselect sent me the right thing in two days! The whole process was easy as pie.

I unscrewed the light cover, removed the burned out light bulb and replaced it with one I ordered on Partselect.com. It was very easy.

Make sure 110v at the transformer. Activate switch controlled by the push button to open and close door. Push in the small metal arm on the switch with none metallic probe. If power is restored to microwave the switch is faulty and need replacement. One switch is not available, the whole 3 switch assemble has to be purchased.