Repair instructions for the control module of the LG washing machine

The control module in any washing machine is its “intelligence”. If it fails, it is impossible to use the equipment. No system will function properly.

To cope with the problem, you need to correctly determine the cause of the breakdown and eliminate it.

To learn how to repair the control module of an LG washing machine, read the article.

Signs of a broken electronic board

The washing machine is complex, but one small part is responsible for performing all the functions - the control module. Therefore, if it fails, it cannot go unnoticed.

Indirect signs that indicate a breakdown LG washing machine control board:

• The spin does not work, the error code does not appear on the screen;
• the indicators on the control panel flash at the same time, sometimes they simply stop lighting;
• the machine does not start washing, does not draw water and does not respond to other commands;
• washing lasts a long time - for several hours;
• The washing machine periodically freezes and requires a reboot to continue normal operation;
• the drum rotates in different directions, the engine speeds up and slows down;
• The heating element does not heat the water.

Since the control module is responsible for the functioning of all systems, any malfunction may indicate its failure.If the reason is not in the part responsible for performing the action, then you should disassemble the “brain” of the washing machine.

What to do and where to go if the washing machine is under warranty?

If your LG washing machine is under warranty and the control board is damaged, you need to contact the service center. Its contacts must be indicated in the warranty card. If they are not available, you must contact the store where the purchase was made.

If no more than 15 days have passed since the date of purchase, the consumer has the right to refuse the defective product or demand its replacement.

Delivery of large equipment and goods weighing more than 5 kg for repair, as well as their return to the buyer, is carried out by the seller and at his expense. You should not take a broken LG washing machine that is under warranty for service yourself.

How to repair it yourself?

Repairing the control module begins with disassembling the washing machine and removing the part. Then it is necessary to determine the cause of the failure and eliminate it.

Disassembling a household appliance

Before you begin repairing the control module of your LG washing machine, you need to get to it. To do this you will have to disassemble the device. The control unit is located behind the front panel.

Procedure:

1. Disconnect the device from the mains and turn off the water supply tap.
2. Unscrew the bolts holding the top cover. They are located on the back wall.
3. Pull the cover towards you and remove it.
4. Remove the washing powder tray. To do this, you need to click on the finger icon.

   It is located at the very base of the air conditioning compartment cover. By holding this button, you can easily remove the powder receptacle.

5. Tighten the screws that will be visible after removing the tray and top cover.

After this, you can begin to remove the control panel. How to disassemble the machine, read Herehow to remove the powder receptacle - here.

Removal and diagnostics of the part

To remove the control panel of an LG washing machine, you need to do the following:

• pry off the control panel with a screwdriver and open the plastic latches;
• pull the part out of the grooves;
• disconnect the chips with wires;
• get the module.

It is impossible to check the operation of the control module without special instruments. It will only be possible to visually assess its condition. Oxide, burnt areas, or mechanical damage may be found on the module. Be sure to check the integrity of the wires.

Control module elements that may fail:

• diodes;
• capacitors;
• relay;
• resistors and other small components.

To determine the performance of parts, they are tested with a multimeter.

Repair

Since the washing machine vibrates during operation, some elements may simply come off. If such parts are found, it is necessary to restore their connection to the board. To eliminate defects you will need a soldering iron, flux, and solder.

Repair of control board elements:

1. Capacitor. It is responsible for voltage stabilization. When broken, the part often swells.

   If, when ringing, the multimeter displays the number 1, a short circuit has occurred, 0 means a break. The capacitor needs to be replaced.

2. Resistors the first order should have a voltage of 8 Ohms, up to 2A, second order resistors 10 Ohms, up to 5 A. If the data does not match, the elements are changed.
3. Thyristor block. The voltage of 1st order diodes should not be higher than 20 volts. It is also necessary to check the input contacts for burnout by ringing them. The voltage should not be more than 12 volts. If a breakdown is detected, the part is resoldered.
4. Trigger. Most often, to fix the problem, you will need to resolder its input contacts.

Sometimes all elements of the control module are working properly, but the board does not work properly. In this case, you can deal with the problem by flashing it. To do this, you will need a programmer that connects the controller to the computer. It costs about 4,000 rubles.

You will also need software and drivers. They can be found on the official LG website. After connecting the board to the computer, select the desired file and install it.

Repair of the control module - in the video:

Replacement

If the control board cannot be repaired, it will have to be replaced. For this need to buy a new part. Before making a purchase, you should check the model of the washing machine. If you choose the wrong part, the equipment will not work.

Examination

You can check the functionality of the repaired or replaced board only after connecting the washing machine. To do this, you need to put it into operation without underwear.If all programs run smoothly, the device does not freeze and does not require a reboot, the repair was successful.

Call the master

If you cannot repair the control board yourself, you need to seek help from a specialist. Masters can be found by ad in the newspaper or on the Internet.

The average cost of repair work is 2,600 rubles, excluding the price of the module itself. You will have to buy it separately (if a part needs to be replaced).

You need to pay for the services of the master only upon completion of them. The specialist must be required to provide a document indicating the warranty period for the repaired part.

Causes and prevention of problems

Various reasons can lead to incorrect operation of the control board. The most common of them:

• manufacturing defect;
• getting the control module wet is especially dangerous if it is under voltage;
• power surges in the network;
• broken wiring;
• violation of the rules for operating the device.

To protect the device from damage in the future, It is necessary to follow simple recommendations:

1. Monitor the air humidity in the bathroom.
2. After washing, leave the machine hatch open for several hours.
3. Take care of stable voltage in the electrical network, for example, install a new stationary relay or purchase an additional relay for personal protection.
4. Follow the User Manual: do not turn off the machine while programs are running, do not restart the washing mode until it is finished, if you need to stop the device, press the “Pause” button, etc.
5. Remove moisture from the rubber seal using a dry cloth.
6. Transport the device carefully, keep small children and animals away from it.

Conclusion

It is difficult to independently repair the control board of an LG washing machine if a person does not have the appropriate knowledge. Such interference may result in having to buy a new part. If you are not confident in your abilities, it is better to seek help from a specialist.