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Models > LTM9020B > Instructions

LTM9020B LG Microwave - Instructions

All installation instructions for LTM9020B parts

These instructions have been submitted by other PartSelect customers and can help guide you through the microwave repair with useful information like difficulty of repair, length of repair, tools needed, and more.

All Instructions for the LTM9020B
1-9 of 9
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Broken door micro switch. (unit does not start heating)

  • Customer: JAMES from BILLINGS, MT
  • Difficulty: Very Easy
  • Time to Complete: 30 - 60 mins
  • Tools Required: Screw drivers
  • 6 of 10 people found this instruction helpful
Unplug the unit before servicing. Need phillips screwdriver. Open door. Use step ladder to access and remove 2 small screws from top of the room air diffuser at top of unit. Slide diffuser slightly to the left to align the diffuser's plastic tab on the left side to rotate toward you. (The wires for the front control panel are at the far left side of this difuser, but difuser is slotted for easy removal). Once the difuser is removed you will see 1 screw at the top that secures the pannel cover on the left side of the unit. Remove screw and slide this panel slightly up and out. This exposes the plastic frame that holds the upper and lower door switches. To locate the door switches and observe how they work, close and open the door and watch the door (bayonets) open and close the micro switches. Do the (red) buttons on top of the switches move up and down when the door bayonets push and release? If the buttons do not "pop" up when opened the switch is defective. The switch frame is secured with 2 screws. Remove screws and rotate the unit out for easy access to the micro switch(s). The internal (spring?) on my unit that is suposed to allow the red (visible) button on top of the switch to "pop" up when the door is opened was broken. Carefully pry the switch outward while being careful to lift the plastic holder-piece that holds the switch in place. Be careful, there is a small pin on the frame, so rotate the switch OUT toward you while lifting (carefully) the plastic holder-piece (you will see it on top of the switch). You can use an ohm meter to test the continuity of the switches. But if the buttons don't "pop" they are defective. Replace switch and reassemble.

Shaft socket was worn out

  • Customer: Cesar from Miami, FL
  • Difficulty: Really Easy
  • Time to Complete: Less than 15 mins
  • Tools Required:
  • 0 of 0 people found this instruction helpful
Pop old one out and replaced it with new one.

Microwave failed to head and light, fan, and turntable failed to come on.

  • Customer: Robert from Cedar Park, TX
  • Difficulty: A Bit Difficult
  • Time to Complete: 30 - 60 mins
  • Tools Required: Nutdriver, Screw drivers
  • 0 of 0 people found this instruction helpful
Problem was due to a faulty door switch. Replaced with a new switch and the microwave now works fine! Only thing that was tricky was that LG uses the hex screws with a peg in the middle to keep the microwave cover on. Had to use a small screwdriver and pliers (on the screwdriver) to unscrew the screws.

suddenly stopped working while in use

  • Customer: Kevin from Colonia, NJ
  • Difficulty: Easy
  • Time to Complete: Less than 15 mins
  • Tools Required: Pliers, Screw drivers
  • 0 of 0 people found this instruction helpful
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

Had to lift on the door for the microwave to run, suspected the door switches.

  • Customer: Arthur from Windham, NH
  • Difficulty: Easy
  • Time to Complete: 30 - 60 mins
  • Tools Required: Pliers, Screw drivers
  • 0 of 0 people found this instruction helpful
Ordered the switches from Partselect, arrive in two days. Had trouble removing the plastic connectors from the old switch terminals, one of the plastic protectors broke, but was able to reuse it. It took a little figuring out how to remove the existing switches. Must push in a tab and rotate the switch on a little pin, then remove. Must be careful not to break the plastic tabs holding the switches in place. Replaced all (3) switches at the same time. All in all it was pretty easy.
All Instructions for the LTM9020B
1-9 of 9