LCS1410SW (CWHELGA) LG Microwave - Instructions

Used a Motor cycle Jack to remove both unites combined. Removed side panels exposing internal working parts. Removed nonworking Magnetron and replaced it with new Magnetron. The process was completed in about 1 hour.

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.

I UNPLUGGED the microwave and removed the cover, using a phillips and a Torx screwdriver for the machine screws. I set these screws aside, so as not to confuse them with the later encountered screws. I photographed the magnetron to assure proper placement of the 6 phillips machine screws involved in reassembly (marking the the locations on the old magnetron would do as well. I marked the old magnetron "old", to avoid later confusion. I removed the two screws holding the shields to the magnetron. I removed 3 of the 4 screws holding the magnetron to the microwave, leaving one of the top screws. I held the magnetron securely and removed the last screw, pulling out a the part of the magnetron that penetrated the microwave. I installed the new magnetron in reverse order. One problem I encountered was locating one of the six screws, which had been pulled into the old magnetron by magnetism.

unplug the unit then pull down , lot of screws are on top. open the cover . you could see the parts that need to replace on the right hand side (heavy side). disconnect wires then test the parts that need to replace by a tester to make sure that it's really broke .then unscrew part and replace .

Pop old one out and replaced it with new one.

Received my replacement Tray,Glass in only 2 days. Opened it and placed it in the Microwave. Yep, it was that 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.

Lifted up the glass plate and stuck the assembly under it ;)

Inserted spring on middle post on button back side. Pushed button/spring into hole on front of microwave until clips engaged and snaped into place.

The old button fell out because the "tabs" on the end of the posts that come out from the button had broken off. These "Tabs/posts" hold it in place - you'll see how when you look at it. All that was necessary was to put the springs from the old one onto the new one. Make sure to put the thing in right-side up; there are two "tabs/posts" on the top side, and one on the bottom. Gently slide it into position as nearly straight as you can, squeezing the "posts" until they clear the front of the opening. Continue to slide in EVENLY until you feel the part "click" into place. That's it! I recommend cleaning out the area fully before installation, with a a god household cleaner, and also putting a thin coat of some sort of lubricant on the part before you put it in. (You won't be able to do that after it's installed.)

Replaced Microwave Button with new button and hooks. Repaire took one min. by just pushing the new button on the Microwave and it hooked on and did not pop out. Good for another 4 years maybe!

I looked up the part number, with shipping it came to $16, and in one minute of installation time, I just gently pushed the button into the front using the original springs that pushed the button back out, and it just clicked into place, the microwave back in action.