LMV1683ST LG - Instructions

You Tube

tested cap. with ohm meter which showed a short. A new HV cap., a fuse and it is working fine again.

Took old ones out, threw away and put new ones in easily.

Needed to raise the part to match the ring. I used peanut butter to hold plastic shim while replacing to hold it in place. Built in Oct. 2009.

Use a ladder.
Remove the broken part if it’s not already off.
Remove and save the screws from the top of the microwave.
Unwrap assembly and insert it into the gap aligning the points.
Screw the screws in.
Verify fit.
Done!

I looked up my problem on the internet and found a very helpful video. Microwave on video was different brand but the internals and methods were very much the same. The video made it simple and easy to fix. Found the replacement switch on the LG parts site and ordered. Two different switch types. One with red switch, the other green. Part was $7.28. Saved a bundle in service costs. Here is the repair video.

https://www.youtube.com/watch?reload=9&v=_AglBJoHgDs

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!!!

Both were easy to replace. I followed the instructions in the users manual which came with the microwave. On the grease filter, I removed the 2 Phillips head screws which hold the grill plate in place. I had to open the microwave all the way to remove the grill plate. The grease filter was easy to remove and replace with a new one. I then put the grill back in and secured it with the 2 screws. Easy Peasy!

Used fingers to pull damaged cover away from microwave interior body. Used fingers to snap replacement cover into open slots.

Cover snap right into special slots.

Pop old one out and replaced it with new one.

Removed door from microwave and then popped the inside widow trim ring off. Removed 4 screws from the window bracket, replaced the latch with a new part and then assembled.

very simple

Initial failure of over range microwave Aug 3rd. Control Panel worked but no heat. Took to local LG authoriaed local repair place. They fixed it quickly and we re-installed it. Worked fine for 2 months then had similar failure again. Agaim took to same authorized repairer. They kept unit for 3 months but finally concluded theu could not fix it and suggested we contact LG for a partial refund. When they tested the unit during re-assembly in my presence, there was a blue flash and the fuse blew. Since we had built a custom tile mural back splash around this unit, I brought it home, ordered a number of time delay fuses new capacitor and two new high voltage diodes. However, using my Fluke DMM, I checked the existing capacitor and high voltage diode and they checked OK so I just replaced the time delay fuse. The high voltage transformer leads had 2 possible ways to connect to capacitor and diode. Tried one way, plugged unit in and turned it on, and immediatly blew the fuse. Replaced the fuse and reversed the high voltage transformer connections,amd turned unit pn, and it worked perfectly. Since we had experienced several power failures during the time of the original failure, the repairer concluded that power spikes might be at fault, so I also purchased a TrippLite ISOBAR4ULTRA 3300 Joule surge protector between wall outlet and microwave, and re-installed over range. It has worked perfectly since.

remove the screws from the bottom, leave tthe light wires attached. There are two screws holding the motor on, disconnect and mark the old unit where the yellow wire goes. Mount motor with two screws and connect wires. Turn on Miicrowave for 10 sec, to be sure all is correct. Attacch bottom cover and reattach power cord. Before doing anything make sure power cord is disconnected and reattached when sealed.

1. Removed unit from the cabinet. (2 screws). 2. Remove the outer microwave metal shell. (10 screws). 3. Locate and remove part. (3 screws). 4. Install new part and replace all screws. 5. Install unit back into cabinet. So easy. I will share this site with all of my friends.