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LG Front Load Washing Machine Main Board Replacement

Introduction

Use this guide to replace the main board in your LG front load washing machine.

This is the main circuit board for the washer. It doesn't contain any buttons or dials—if your washer buttons or dials are broken, you'll need to replace the control panel instead.

This guide will work for most LG front load washing machines. This guide is written with a model WM3050CW washer. If you have a different model, you may encounter some minor disassembly differences, but the overall repair process will be the same.

What you need

  1. LG Front Load Washing Machine Main Board Replacement, Safety Precautions: step 1, image 1 of 2 LG Front Load Washing Machine Main Board Replacement, Safety Precautions: step 1, image 2 of 2

    • Before you begin your repair, perform the following:

    • Turn off the main water supply

    • Unplug your washer

    • Disconnect all water connections at the rear of your washer

    Edit

  2. LG Front Load Washing Machine Main Board Replacement, Unfasten the top panel: step 2, image 1 of 3 LG Front Load Washing Machine Main Board Replacement, Unfasten the top panel: step 2, image 2 of 3 LG Front Load Washing Machine Main Board Replacement, Unfasten the top panel: step 2, image 3 of 3

    • Remove the screw(s) securing the top panel brackets to the back panel.

    • You don't need to remove the screws securing the brackets to the top panel.

    Edit

  3. LG Front Load Washing Machine Main Board Replacement, Remove the top panel: step 3, image 1 of 2 LG Front Load Washing Machine Main Board Replacement, Remove the top panel: step 3, image 2 of 2

    • Slide the top panel towards the rear of the device to disconnect its clips.

    Edit

  4. LG Front Load Washing Machine Main Board Replacement: step 4, image 1 of 2 LG Front Load Washing Machine Main Board Replacement: step 4, image 2 of 2

    • Tilt the top panel upward to completely disconnect it from the chassis.

    • Remove the top panel.

    Edit

  5. LG Front Load Washing Machine Main Board Replacement, Disconnect the pressure sensor: step 5, image 1 of 2 LG Front Load Washing Machine Main Board Replacement, Disconnect the pressure sensor: step 5, image 2 of 2

    • Depending on your device, your pressure sensor might have a wire harness. If so, disconnect each wire on the harness.

    • Disconnect the connector from the pressure sensor.

    • Always grip cables by their connectors and not the wires themselves.

    Edit

  7. LG Front Load Washing Machine Main Board Replacement: step 6, image 1 of 2 LG Front Load Washing Machine Main Board Replacement: step 6, image 2 of 2

    • Disconnect the hose from the pressure sensor.

    Edit

  8. LG Front Load Washing Machine Main Board Replacement, Unfasten the pressure sensor: step 7, image 1 of 1

    • Remove the screw(s) securing the pressure sensor.

    Edit

  9. LG Front Load Washing Machine Main Board Replacement, Remove the pressure sensor: step 8, image 1 of 3 LG Front Load Washing Machine Main Board Replacement, Remove the pressure sensor: step 8, image 2 of 3 LG Front Load Washing Machine Main Board Replacement, Remove the pressure sensor: step 8, image 3 of 3

    • Unclip the pressure sensor from the chassis or other components.

    Edit

  10. LG Front Load Washing Machine Main Board Replacement: step 9, image 1 of 2 LG Front Load Washing Machine Main Board Replacement: step 9, image 2 of 2

    • Lift the pressure sensor away chassis and remove it.

    Edit

  11. LG Front Load Washing Machine Main Board Replacement, Disconnect the control panel cover: step 10, image 1 of 3 LG Front Load Washing Machine Main Board Replacement, Disconnect the control panel cover: step 10, image 2 of 3 LG Front Load Washing Machine Main Board Replacement, Disconnect the control panel cover: step 10, image 3 of 3

    • Disconnect any cables or fasteners secured to the control panel cover.

    • Repeat this procedure for any bundled cables that keep the cover from opening.

    Edit

  12. LG Front Load Washing Machine Main Board Replacement, Remove the main board cover: step 11, image 1 of 3 LG Front Load Washing Machine Main Board Replacement, Remove the main board cover: step 11, image 2 of 3 LG Front Load Washing Machine Main Board Replacement, Remove the main board cover: step 11, image 3 of 3

    • Use a flathead screwdriver or a prying tool, to unclip the main board cover.

    • Remove the main board cover.

    Edit

  13. LG Front Load Washing Machine Main Board Replacement, Unfasten the main board: step 12, image 1 of 2 LG Front Load Washing Machine Main Board Replacement, Unfasten the main board: step 12, image 2 of 2

    • Remove the screw(s) securing the main board to the back side of the washer.

    Edit

  14. LG Front Load Washing Machine Main Board Replacement, Separate the main board from the chassis: step 13, image 1 of 3 LG Front Load Washing Machine Main Board Replacement, Separate the main board from the chassis: step 13, image 2 of 3 LG Front Load Washing Machine Main Board Replacement, Separate the main board from the chassis: step 13, image 3 of 3

    • Slide the main board out of its slot in the chassis.

    Edit

  15. LG Front Load Washing Machine Main Board Replacement, Remove the main board: step 14, image 1 of 3 LG Front Load Washing Machine Main Board Replacement, Remove the main board: step 14, image 2 of 3 LG Front Load Washing Machine Main Board Replacement, Remove the main board: step 14, image 3 of 3

    • Label each connector and its spot on the main board. During reassembly, reattach each connector to its proper spot.

    • Lift the main board out of the chassis to access each of the connectors.

    • Disconnect each connector from the main board.

    • Remove the main board.

    Edit
Conclusion

To reassemble your device, follow these instructions in reverse order.

Take your e-waste to an R2 or e-Stewards certified recycler.

Repair didn’t go as planned? Ask our Answers community for help.

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Bill Gilbert

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