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My LG dishwasher died, how to do CPR?

Good day,

i bought a house a year ago and all appliances came with it including a LG Dishwasher. Few month after moving in, the dishwasher stop working mid cycle, light off, nothing works. I’ve checked the power source and everything is fine but the DW doesn’t light up, no code error, nothing…

I don’t understand electronics but i would like to try fixing it… please help

Update (10/12/2019)

The model number is LDS4821ST

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Android 修理キット



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Most Helpful Answer

First thing to do is check the wall plug for power. Plug something into it you know works and test. There’s not much information here to go on to get any further.


You need to get in there with a multimeter to try to located the break in the power.

Digital Multimeter

Main Control Board

The main control board provides power to nearly every component of the dishwasher. If there is a problem with the main control board, it might not send voltage to the dishwasher, causing the dishwasher not to start. Control boards are often misdiagnosed—make sure you check more commonly defective parts before replacing the main control board.

Digital Multimeter画像


Digital Multimeter


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thank you for answering.

I have verified and there is power going into the DW (hard connection). But nothing work, no lights go on, no sounds.


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Stephane will be eternally grateful.
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