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  1. Repair
  2. LG
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  1. LG Dishwasher

LG Dishwasher won't power on

Common reasons your LG Dishwasher won't power on

The most common reasons your LG dishwasher won't power on are a defective PCB, a damaged user interface control, or a stripped wire connector.

  • 38%

    38% of the time it's the
    PCB

  • 27%

    27% of the time it's the
    User Interface Control

  • 9%

    9% of the time it's the
    Wire Connector

  • 26%

    26% of the time it's the
    Something else

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    What our customers say about us

    With more than 1.3 Million 5 Star Reviews, you don't have to take our word for it

    Thorough

    James called to give an estimated arrival time. He was professional and personable. He had 2 professional ideas of the problem and found 1 was correct, but he didn't stop there. He did a thorough check of the appliance. 1 small part was needed. He ordered the part to my house. Fortunately, he was able to schedule for the next week, just before Thanksgiving. As before, he called ahead, arrived and quickly fixed the problem. My appliance is working perfectly.

    Kirsten A, Oxford, PA

    Service Call

    Luke was great. Polite and knowledgeable even though the dishwasher was older than he!

    James G, Hillsboro, MO

    Daniel

    Daniel went above and beyond to fix my dish washer. Very pleasant to deal with.

    Paul F, Hghlnds Ranch, CO

    Most common repairs needed to fix a LG dishwasher

    PCB Replacement

    A dishwasher that won't power on could have a defective printed circuit board (PCB). The PCB, also called an electronic control board, will freeze up and fail to power up the control panel when its internal memory and logic is corrupted. A failed internal electronic relay or bad electronic part on the circuit board could be causing the control board to fail. Determining whether a control board is defective is difficult. Schedule service with a Sears Home Services technician to diagnose and repair your dishwasher if it won't power on.

    How to replace a dishwasher electronic control board

    User Interface Control Replacement

    When the dishwasher won't power up, a damaged user interface control could be causing the problem. The user interface control connects to the electronic control board through a wire harness and sends signals to the control board to help manage the dishwashing cycle. A stuck key on the user interface control can cause the electronic control board to stop the cycle and the dishwasher won't work until the damaged user interface control is fixed. Have a Sears Home Services repair expert visit your home and replace the user interface control if it's damaged.

    How to replace a dishwasher user interface control

    Wire Connector Replacement

    If your dishwasher won't power on, a stripped wire connector could be causing the problem. Several different wire connectors inside the dishwasher can keep the dishwasher from working if wires get disconnected. The wires inside the junction box must stay connected for the dishwasher to get power from the power cord. The wire harnesses on the electronic control board and user interface control must also stay connected to keep the dishwasher working. When your dishwasher isn't working, have a Sears Home Services Repair Expert visit your home and fix the problem.

    How to repair broken or damaged wires

    What to expect when you experience an LG dishwasher won't power on issue

    How is the dishwasher won't power on issue fixed?

    Correcting most dishwasher won't power on issues involves replacing the PCB, user interface control, or wire connector. However, there are many potential causes, so a thorough diagnosis is key to fixing the problem. An accurate diagnosis is essential to understanding how much the repair will be.

    Sears Home Services recommendations for a dishwasher won't power on problem

    When a dishwasher won't power on, it can be for many reasons. To avoid replacing unneeded parts, we recommend having a Sears Home Services professional perform diagnostic tests to identify the root cause of the problem. Our technicians are experienced at diagnosing all types of dishwasher failures.

    What to look out for with a dishwasher won't power on diagnosis

    Diagnosing modern appliances without proper knowledge and training can be difficult. Without using proper diagnostic techniques, fixing your dishwasher problem will only be achieved through changing parts on a hunch. Appliances, especially in the last 10 years, have become extremely advanced, and many models have electronic parts that are difficult to test. DIY repairs on the latest appliance models are becoming increasingly difficult.

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    Glossary Terms

    What is Hard Water?

    Hard water is water that contains high levels of dissolved minerals, particularly calcium and magnesium. It contrasts with soft water, which has lower concentrations of these minerals.

    What is Wattage?

    Wattage is the measure of electrical power expressed in watts (W), indicating the rate at which a device consumes energy.

    What is Refrigerant?

    Refrigerant is a chemical compound used in HVAC systems and refrigerators to absorb heat from the environment by cycling through states of evaporation and condensation, enabling the cooling process through its cycle of evaporation and condensation.

    What is R-12 Refrigerant?

    R-12 refrigerant, also known as Freon-12, is a chlorofluorocarbon (CFC) compound that was once widely used in air conditioning systems, refrigerators, and aerosol propellants before its phase-out due to environmental concerns.

    Additional possible LG dishwasher symptoms you may experience

    These dishwasher brands may also experience won't power on