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LG Vacuum Cleaner With Power Issue Repaired

By on October 15, 2020
how to fix vacuum cleaner











As I was taking my son to his guitar lesson next door, the guitar instructor who is also a relative of mine asked me to repair his vacuum cleaner that has power problems.

how to fix lg vacuum cleaner

As the customer explained the power issue, it came to my understanding that the machine once the power button is pushed on,


it keep shutting on and off and eventually it shuts off and stay off.

how  to  repair lg vacuum cleaner

I have seen problems like that before so I headed directly to the power switch board for inspection and cleaning.

vacuum cleaner circuit

I took two screws off and I was able to see the actual board that has the power button and the resistance that controls the speed of the vacuum cleaner.

vacuum cleaner variable resistor

As expected, I found a lot of dirt on that slide switch so I gave it a good clean with cleaning alcohol and tested it but it did not help much with the power on and off issue.

switch dirty in vacuum cleaner

As I traced the wires through the hose of the vacuum cleaner it leads me to these connections and as you can see in the photo, they were dirty as well.

how to fix and repair vacuum cleaner

I gave it a very good clean and of course the pins that sit on these dirty lines were cleaned as well. They were dirty as well as seen in the photo.

I put the machine back together and tested it. I actually vacuumed some areas in my shop that looked dirty and needed cleaning. It was working like a charm without any shutting down.

Mission Accomplished.

This article was prepared for you by Waleed Rishmawi, one of our ‘Master Authors’ and currently working in the Bethlehem area of Palestine repairing electrical and electronic equipment.

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Note: You can check his previous repair articles in the link below:




  1. Parasuraman S

    October 15, 2020 at 6:31 pm

    A professional approach and solution to fix an essential home appliance! Many thanks for sharing!

    • Waleed Rishmawi

      October 17, 2020 at 2:32 pm

      Parasuraman: thanks man. have a blessed day

  2. Albert van Bemmelen

    October 15, 2020 at 10:55 pm

    Good job! These old carbon potentiometer sliders or the rotator potentiometers in future probably become some sort of digital voltage adjusters to prevent them from wearing out so easily.

    • Waleed Rishmawi

      October 17, 2020 at 2:35 pm

      Albert: thanks man. the problem is not just wearing out but also dirt that can do damage as well even if it was a digital voltage adjuster..dirt can get anywhere but again that is why we are here because someone broke something or a device is not working. LOL. have a blessed day

  3. babums

    October 16, 2020 at 10:33 pm

    Really your master in repairing electrical and electronic appliances.Thank you very much for sharing knowledge and awaiting for many more articles please.

    • Waleed Rishmawi

      October 17, 2020 at 2:35 pm

      Babums: I thank you for the compliment. you are most welcome and have a blessed day

  4. Opheas

    November 27, 2020 at 11:29 am

    Good job sir. I also have a vacuum cleaner im trying to fix is a SATURN ST-VC7290 i suspect the ic but i can not identify the part number can anyone please assist me with its part number so that i can look for it


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