MV1843ASD LG Microwave - Instructions

Self

I followed an old appliance repair forums post from 2008 that discussed this exact common issue with this LG model. It took me quite a while to find the info. Then I used the schematic diagrams on your website to find where the part was located inside the microwave. I removed the outer cover. I tested all components including the thermostat for continuity with a multimeter. I discovered there wasn't any continuity in the thermostat so ordered the part and replaced it. Everything works like a charm! Thanks for the great, fast service.

WHEN ARE YOU FINALLY GOING TO GET AROUND TO SENDING MY PART? HOW CAN I REPAIR THE MICROWAVE WITHOUT THE $35 PART I PURCHASED FROM YOU? PLEASE SEND MY PART IMMEDIATELY BEFORE I PHONE BBB AND JD POWERS.

removed old cover put the new one in place found right size screw from my tool box, tightened it.

Followed owners manual instructions to the letter: removed two top screws, opened the unit door so I could slide out the old filter. We don’t cook much at all in the unit, mostly just heating coffee and reheating leftovers. BUT! The top grill was pretty greasy and needed hot soapy water to clean, including in the depths of the top area. The whole process, especially the company website for part ID and purchase, was slick!

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!

I removed the overhead heat vent removed the screws off the digital panel board and pushed left on panel. Came off and then I removed the 8 screws holding the circuit board in place. Removed all the connected cables, then proceeded to install new circuit board. Reversed process. Microwave is brand new again.

You just pull out the clip but the the hard part is doing that without bending the metal hole the holds the clip. If you do bend the hole the clip will not fit flush. Just get a flat screwdriver and reshape the whole.

Change gasket

1. FIRST -> UNPLUG THE MICROWAVE!
2. Remove two screws (left & right most) at top to remove the vent grill.
3. Open the door and tilt top of vent grill out being careful of to not break the two mounting tabs.
4. Remove screw at top of the keyboard / display assembly (hinges at bottom).
5. Note the position of wires (take a photo) and remove 5 wire connectors.
6. Place keyboard / display assembly on a towel, face down.
7. Compare old PCB with new PCB and verify they are have the same part number.
8. Remove ribbon / flex cable (pull locking bar), and four screws to remove the PCB.
9. Install the new PCB, tightening the four screws and reinstalling the ribbon / flex cable. Flex cable must be straight and press the locking bar.
10. Re-install the 5 wire connectors using your photo.
11. Re-install the keyboard / display assembly and secure with the single screw.
12. With the door open, re-install the vent grill being careful to insert the two upper tabs.
13. Reinstall the two screws holding the vent grill.
14. Plug in the microwave and test.
In my case, the vent grill tabs were broken (one was broken prior to disassembly and the second damaged upon re-install).
Thus, I secured the vent grill using two plastic tie wraps inserted though the screw holes.
Total time: 30 minutes.

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

Pulled off band unscrewed old handle and screwed on new one replace band

Originally called it "grease filter" until I found very small print "air filter" on damaged original. Part #PS3527528

Slipped into place with ease -- right bottom of microwave

Removed the phillips screws from the base.

Using a # 10 secure driver, remove the motor. (I recommend obtaining a secure star driver set to be sure you have the right size)

Replace the spacer, which is a separate part from the motor.

Reinstall the spacer and motor.

Reinstall the bottom panel.

Enjoy!

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