LG is one of the “relatively reliable” manufacturers of large and small kitchen appliances.
They make a number of best dishwasher models on the market today.
If you happen to own one and experience a problem one day with it not powering on when you go to push the power button.
One of the common issues, when LG dishwasher has no power and not responding on any buttons on the user interface board, is when NOISE FILTER is MALFUNCTIONED
In this article, we have included a step by step instruction guide to help DIYer’s to be able to replace the noise filter in an LG dishwasher.
Replacing the noise filter in an LG Dishwasher
Following this procedure, it should be fairly easy for anyone who can use a screwdriver and nut driver.
After you have received the new noise filter that you ordered from here… you are ready to go.
The first thing you should do is check the breaker in your home’s main power panel.
If the breaker marked dishwasher is on and not in the tripped position (breaker handle in the center position) then you will likely need to replace the noise filter or line filter, which protects the dishwasher’s internal circuitry from a power spike or surge.
You can contact LG ( if dishwasher still on warranty) or order the part online here.
The first thing you should do is to check and see that there is power getting to the dishwasher.
Since you already checked the breaker and it was on.
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To check that the power is actually getting to the dishwasher you will need a screwdriver and multimeter.
Step By Step Procedure
With the breaker still on
#1 Using a screwdriver remove the two screws holding the bottom cover on.
#2 Remove the screw holding cover on the power box (right-hand side of dishwasher)
#3 Using a multimeter check to see if there is a voltage between white and black wires
#4 If there is a voltage you can turn the breaker off and continue on to the next step
#5 Turn the breaker back OFF
Test the fuse on the main control board (before replacing the noise filter)
#6 With the breaker off open the dishwasher to access the inside front panel
#7 Remove all of the screws that are holding the cover in place
#8 Pull the cover away from the door enough to access the control panel from under the top of the cover
#9 Using your multimeter check the fuse for continuity (multimeter should show zero)
#10 If the fuse is bad you will need to replace the control board as well
Accessing the Noise Filter
To access the noise filter you will need to pull the dishwasher out from under the counter in order to get at it.
The water line and drain lines should be connected under the sink area if it is necessary.
You may need to disconnect the water line and drain lines if there is not enough excess hose length.
#11 Remove the top two screws that are holding the dishwasher in and loosen the leveling feet at the bottom and carefully pull the dishwasher out.
#12 If you feel any resistance to you pulling it all the way out you will need to disconnect the water line and drain lines first.
#13 If not, continue pulling the unit out so that you can get at the right side of the machine
#14 Once you locate the noise filter assembly you need to disconnect the wires
#15 After removing the wires you will need to remove the one screw that holds it in place
Note: the screw is a little difficult to get out and you will need to use a short stubby screwdriver
#16 After the screw is removed shift the noise filter to the right to dislodge it and pull it out.
Installing the new Noise Filter
#17 Take new one out of the package and put it in the place that you removed the old one
#18 Place the screw in and tighten it
#19 connect all of the wire connectors in place
#20 Slide the unit back in place and reconnect the water and drain lines if you had to disconnect them
#21 Put the two screws back in at the top that you had to remove and tighten them
#22 Put the leveling feet back in place and snug them back against the floor
#23 Be sure that you reconnect the power wire that you checked for power earlier and place the covers back on ensuring you tighten the screws
#24 Put all of the screws back in that you removed from the inside cover and tighten them
#25 be sure that you turned the water supply back on and that the drain in is tight
#26 turn the breaker back on and check it for power and it should be powered and ready to go