JE1440BF002 - Instructions

First I had to accept the fact that the unit was designed to keep non-professional people from doing any repairs. The switch was installed in such a manner that I had to break the mounting to remove the switch, then drill a hole in the mounting to secure the new switch in place.

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

-unplug
-remove top and front covers
-unplug wire connectors from heating assembly
-remove heating assembly from metal stand and push out of the way
-remove metal stand from dry
-pull out heating assembly
-install new one in reserve order

I used a phillips screw driver and a special type bit to undo the screws from the cabinet and found the light bulb and took the old one out and put the new one in and put it back together.

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.

Took 5 seconds....lay it on the spinner??

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

Part just snapped into place and wires were reattached.

unplugged power
removed main black cover.
located part WB24X10047 and replaced

With this model, you must remove the outer covering. Don't try to access the display unit from the front like I've seen in some other GE microwave videos. After removing the outer covering, the switches are easy to replace. They are very visible and easy to get to without taking any other parts off. You will see the door switches just behind the display board. Remove the switch and then remove the connecting wires to ensure you don't inadvertently brake a wire. You will need a tamper resistant star bit to remove 3 or 4 screws from the back panel. All other screws are philips head. I went ahead and replaced both switches (yes...there are two of them) and works like a charm. I saved an $800 microwave for less than $60 and know what to do if it happens again. Appears to be a common problem on this model. Thanks for others making a post...It saved me time and money reading others remarks. Good luck!

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

DISCONNECT THE POWER CORD and discharge the capacitor
Leave unplugged overnight
Remove vent grille by removing the 2 philips screws
Remove the LED panel by removing 1 phillips screw
Disconnect all connectors that plug into back of the LED board completely
Remove the wires from the switches (3) at the inside edge of the microwave door
Gently remove each switch housing and test all three switches for continuity
Carefully replace non-functioning switches and reassemble the panel
GOOD LUCK

Cut the wire connection of access door on the bottom of the oven. Once access door was removed, I took the screw holding the drive motor in place, removed the wire connector and taped the connection to oven so that it did not drop into the bottom of the oven pulled motor out. Put new motor in, put connector back on motor secured the motor with the scre, put access door back in place put roller guide on the drive motor from inside of the oven and put plate on roller and turned it on for a test. it worked.

Removed cover
Disconnected capacitor from old magnetron
Removed old magnetron
Installed new part
Connected capacitor
Reinstalled cover

Remove the top of the microwave, regular phillips screws on sides, torque screws on back. Lift up back and slide off cover. Light bulb socket is easily detached and bulb unplugged and replaced. Slide cover from back lifted slightly so lip will slide into front of microwave, than replace screws. Be sure to unplug microwave before you start.