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KCMS13 - Instructions

All Instructions for the KCMS13
16 - 30 of 83

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the turn table no turn and no heat the food. but the bottom oven worked
3 of 4 people found this instruction helpful.
  • mark from SANBORN, NY
  • Really Easy
  • 15 - 30 mins
  • Screw drivers
well I unplugged the microwave one day prior to working on it. shock precaution smart way to do this job. very easy pullout the screws behind the unit pull off the outer casing. minor screws inside the unit you have to remove a couple things out of the way. unplug the magnetron and remove first gives you more room to work on the side pane l to replace the micro switches. I only replaced one the bottom micro switch. only one bad, but since I was in there I clean the bulb and changed the magnetron any ways. I read other reviews and made my choice to do so. it works perfectly now. Thanks PartSelect for having parts.
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Would not heat and made a buzzing or popping sound
4 of 7 people found this instruction helpful.
  • Thomas from NEWARK, DE
  • Easy
  • 15 - 30 mins
  • Screw drivers
Unplug the microwave. Remove the Philips head and safety Torx head screws along the bottom of the sides and rear of the microwave which hold the black cover on. Lift the cover up at the rear and slide it backwards to disengage the tabs on the front top. Remove the cover. Discharge the capacitor by shorting the terminals to each other and then ground. Do this with a well insulated object and be aware there may be a pop when you do this. Keep hands, etc. on the insulated part of the object (screwdriver handle, etc). There's a lot of stored energy in that capacitor. I'd advise first checking the diode to make sure its not bad. Replace it if it is. The Magnatron is held in with a couple of screws on the top and sides. Unplug the connector and remove the screws. Remove the Magnatron. Installation is the reverse of removal.
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old button broke into three pieces
3 of 4 people found this instruction helpful.
  • Robert from Bradenton, FL
  • Easy
  • 15 - 30 mins
  • Screw drivers
removed seven screws to take door apart and replace button. Glad that you still had the part for a 25-year-old unit.
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Items were not getting heated up in the microwave,
2 of 2 people found this instruction helpful.
  • Kenneth from CRYSTAL LAKE, IL
  • Really Easy
  • 15 - 30 mins
  • Screw drivers
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 in stalled both. The microwave still doesn't work.
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No heat when the microwave was in use
2 of 2 people found this instruction helpful.
  • Stuart from STUART, FL
  • Really Easy
  • 30 - 60 mins
  • Pliers, Screw drivers
The instructions on the website were incredibly easy and I saved myself a lot of headache by using this site.

-it was built in unit - so I needed to pull the decorative grill from around the outside to remove it from the wall
- removing the back of the case involved removing phillips head screws from along the side and bac k of the unit. the only issue I encountered on removing screws was the fact that the "torx / star" screws could not be fit with the wrench that I had (they had a pin in the center that would not allow the wrench to fit into the star). However, a pair of pliers was handy and they were removed just easily.
- I had ordered both the high voltage diode and magnetron because I didn't know which item was the problem. I grounded the diode with two screwdrivers while wearing rubber gloves to be safe. the warnings on this did the trick as it was the only scary part of the operation.
- the diode was a little hard to spot looking at the schematics, but is is found on the lower right corner of the right side of the panel and easily pulled out and replaced. I tried the microwave again to see if it worked...and it did not. So I confirmed that the magnetron was the issue.
- removing the screws for the magnetron and putting in the replacement was a dead easy and I tried the microwave again before putting cover back on. Worked like a charm. Super easy!
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Microwave losing heating items
2 of 2 people found this instruction helpful.
  • John from PEORIA, AZ
  • Easy
  • 30 - 60 mins
  • Pliers, Screw drivers
Took microwave out of builtin cabinet with 4 screws.
Put microwave on center island and removed cover.
Tested interlock switch with volt meter and it appeared ok so I put my kit back in box and sent back.
Took out magnetron unit and replace with new part.
Put cover back on and test.
All is working and installed ba ck in cabinet. Two weeks later all still working great.
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Power Went Completely Out
2 of 2 people found this instruction helpful.
  • Brittney from LUFKIN, TX
  • Very Easy
  • 15 - 30 mins
  • Pliers, Screw drivers
The power on the microwave went completely out when I went to use it, but there was no power failure for the house or neighborhood. We removed the microwave from above the oven. Took out the screws on the sides and back of the microwave and slid the top back. The line fuse was located on top unobstructed, NOT behind the button panel li ke some microwave models. As the appliance is over 20 years old the line fuse was quite old. It was really hard to pry it out of its holder and actually broke. I used a vacuum to suck up the dust and glass and it was easier to get out the ends once the middle broke. Popped the new line fuse in, slid the top back on, put in the screws and put the microwave back in its compartment above the stove. Good as new!! We were about to spend money on a new microwave, but thankfully I came across this site. So happy I did!!

This repair was really easy. The part that took the most time was taking it down from it's compartment above the oven and putting it back up there once repaired.
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Oven would not start when closing door.
4 of 8 people found this instruction helpful.
  • Raymond from DEPEW, NY
  • Easy
  • Less than 15 mins
  • Screw drivers
Removed some cosmetic panels. Removed the assembly with micro switches. Examined the faulty switch by checking the clicking action of switch. Two others were ok by this method. Replaced the switch with new one. Works fine so far. Thanks to web site and YouTube videos.
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Turntable stopped turning
2 of 3 people found this instruction helpful.
  • Kirk from Los Angeles, CA
  • Really Easy
  • Less than 15 mins
It seems that the heat of the microwave cracks the part over time. It is a very simple installation.
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Turn table did not consistently turn during microwave oven operation.
2 of 3 people found this instruction helpful.
  • Jeffrey from BREMERTON, WA
  • Very Easy
  • Less than 15 mins
Using fingers, the old turntable roller guide was pulled up off the motor shaft. The plastic roller guide shaft coupler was found to be broken, allowing the motor shaft to spin without turning the roller guide. The hole in the floor of the oven was inspected, and no broken pieces were found which could interfere with the new roller gui de. The new roller guide was then gently pressed down over the motor shaft. Very easy.
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Glass plate inside microwave broke
2 of 3 people found this instruction helpful.
  • Linda from HAYWARD, CA
  • Very Easy
  • Less than 15 mins
Part select made it very easy for me to purchase a replacement plate, which I didn’t think I was going to be able to find so thank you part select for having what I needed
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Door switch malfunction
2 of 3 people found this instruction helpful.
  • Sherry from PINELAND, SC
  • Very Easy
  • Less than 15 mins
  • Nutdriver, Screw drivers
Take cover off microwave. Check door switches to determine which one was faulty.Remove and replace faulty switch.
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Would not start
2 of 3 people found this instruction helpful.
  • LENNARD from BURNSVILLE, MN
  • Easy
  • 30 - 60 mins
  • Pliers, Screw drivers
Watched a you tube video prior to installing new switch. Followed the video which gave me confidence i was up to the task. After removing the touch pad I found my design was not exactly like the you tube model but I found the defective switch, replaced it and put the microwave back together. Works great. Again watch the videos
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broken belt on wave disperser
3 of 6 people found this instruction helpful.
  • Wendell from Hot Springs Village, AR
  • Easy
  • 30 - 60 mins
  • Screw drivers, Socket set
This microwave is the upper unit in combination with an oven. Microwave portion is Model RM288PXS. Cut power at breaker box. Remove metal frame around 2 sides and top, (5 screws). Remove 4 screws on bottom, whicn anchors the unit to the frame.Remove contol panel (2 screws at top) and swing down. Pull out female electrical socket at bottom right back in conrol unit space. Now pull out microwave from frame about 6-8 inches. This provides access to pulleys on the motor and wave disperser. Put on belt. Reverse the above procedure to finalize the repair. This is the 3rd time I have had to replace this belt. They last about 6-7 years. Without the wave disperser , the microwave does not provide even heat.
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Unit would not heat
1 person found this instruction helpful.
  • william from LA VERNE, CA
  • Easy
  • 30 - 60 mins
  • Pliers, Socket set, Wrench (Adjustable)
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.
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All Instructions for the KCMS13
16 - 30 of 83