SCB1000KCC - Instructions

.Shut breaker to microwave
. Remove two screws on each side of microwave cabinet frame holding it to the wood frame
. Get assistance in pulling microwave out of cabinet
.unplug power cable before pulling microwave completely out of cabinet
. Microwave has two separate panels top and sides removed all screws around frame along the door and sides
. Remove top steel panel
. Remove sides
. Locate screws around the electrical board screen just behind the front cover
. Use small flat head screwdriver to move plastic fasteners on each side of the electrical to release the board.
. Identify the LCD screen board and remove two screws on each side unplug the wire harness from the board.
. Lift LCD board off the two set pins
. Replace board
. Replace screws
. Plug harness back into board
. Reassemble electrical board back into display panel. Pay attention to re-engage the two plastic clips before replacing screws.
. Once panel is completely replaced.
. Resemble all panels in reverse order
. Test microwave before installing unit back into cabinet.

I verified I had 120 volts going into transformer when the microwave was supposed to be running. The capacitor and HV diode both tested good. Be sure to discharge the capacitor before working in this area. This isolated trouble to either the transformer or magnetron. The windings of the transformer measured good. So ordered a magnetron. It was very easy to swap. There were 4 screws and one connector. This fixed our microwave.

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.

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

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.

Remove 1 screw, remove light bulb and replace and replace screw. No problem.

PER YOUR INSTRUCTION

-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

Slips in easily. Line up the tabs with the brackets and pop in.

Unscrewed the control panel (2 screws), lift up and let hang, with a plan screwdriver open bracket holding the switch, unplug 2 wires, replace with new switch, plug in the 2 wires, push switch back into bracket. Then slide on the control panel, put the 2 screws back. Easy fix.

Part just snapped into place and wires were reattached.

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

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

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!

remov cover to check voltage and found problem at the interlock switch ohm the switch and found it was open replace both switches it work fine now